Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fcae79af47cfa8…

MALICIOUS

PDF

170.2 KB Created: 2021-06-26 13:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: cf92751b2019f684ab66920f9050a240 SHA-1: 0aab9831c410ccb76f1769c61a75ec0b3d314a51 SHA-256: 46fcae79af47cfa876feee75419345d3aaf871db85a61562f240e7eb96fd6df3
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document that contains numerous links to external websites, many of which appear to be hosted on compromised WordPress sites. The heuristic 'SE_ENABLE_LURE' indicates that the document likely instructs the user to enable macros or editing, a common tactic for malware delivery. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9664

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=too+much+dopamine+effects PDF link annotation
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607adbbed758f---mepanavixisatatirinejodag.pdfIn PDF document text
    • http://texmet.pl/userimages/file/suvematiwijukeselorotasuv.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/96026053037.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/aa6277a8ac00df4c0167cdc0416d8c33/60761876038.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160929a9d8a450---70825542982.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b11d72801a---99631008230.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/tevisu.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c89b35311d---laner.pdfIn PDF document text
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/mof27mp9ibvgkeoatjart8vhr6/xoviponezag.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/60068941561.pdfIn PDF document text
    • http://waypl.pl/upload/File/fiwimidajufebomizud.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/sofatijinew.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/cf33766742ed8f32c2a55a2c5b3428a9/18606941071.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1ed98d4b5---guwafer.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/910500531.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/175779d3a72d14374a79b8c288f0dc83/tejitebobojofo.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/kutaliditowoxemepevis.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c961c25a22c---lipofarex.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/1a40f15233d90b7409f2ab73702f980c/75481452666.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/apu345shiulsvq055qudvgvhba/2071458565.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/e887dbeda9e0fa6b6bfd22ca8b5de24c/54886528137.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16079a8df2218b---ronebanonigujolazopaso.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/fb857a2c057376b77a3a1ee01e727536/51744046872.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/nuxukubolelujojokegoni.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c302ab070ab---80301529598.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf68677218---gimopixosabi.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/de7b97bce5ae0ecc0f3770efa3570769/kumepizomiw.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23611 20492 bytes
SHA-256: 1871fb7c48d30ab5ea7e9d9c34ce1a4177674a9ca29f4efd9f638ca2a9c4d3e0
font_01_sfnt_off00026a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A4B 10800 bytes
SHA-256: 7c045c168fe5ed251be943839d405a1fd17b094697ec1c90b2d000c6f0dfe987
font_02_sfnt_off00028307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28307 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.