Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ffc5b675d1f0e1…

MALICIOUS

PDF

80.0 KB Created: 2021-09-05 07:33:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 62043538375ad88b272319c9549da4f3 SHA-1: 66190c362f17f59d8bd2045451c2699e970cdb0b SHA-256: 54ffc5b675d1f0e14928d317b904a67368a3fb25bf085e337dda9c9c4170c927
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs pointing to potentially malicious or phishing websites. The ML classifier also strongly indicated maliciousness. The presence of multiple external URIs and a link farm structure suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • 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.
  • 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://drafthe.ru/uplcv?utm_term=powerpoint+to+pdf+without+animations PDF link annotation
    • http://adabaskimerkezi.com/upload/file/57473642634.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/dejupunegofoziru.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/73d8dcd983b32465f6a6b75e57f615a0/16684122264.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bca84ab9584---nemakuwuduwepu.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/kirak.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/nopiz.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/jd4643a5cevubo1928jgcshroj/natugasowadijub.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/ridavepit.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc153d1273---nikimubusipolazifaj.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/m100dh3q37v7ebj9s1fd5ljcle/gasalukitugabuwojiwix.pdfIn PDF document text
    • https://truckforceone.eu/upload/editor/file/pidizezorexirirudirubef.pdfIn PDF document text
    • http://getsolarnj.com/userfiles/file/47737586776.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/68221185203.pdfIn PDF document text
    • http://helloslow.com/data/userfiles/files/64727090660.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16075da4df231d---vujesomepuredoki.pdfIn PDF document text
    • http://chapelguild.com/images/usr/87466172606.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840a329ae36---19374464520.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/4880426001c6e46bc5f1360c37fc4820/pubibedex.pdfIn PDF document text
    • http://mateuszkucharski.pl/admin/file/42097867535.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/3978f62e71ac24b20cfc705a413cbf76/54353912241.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/51151101306.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/de4bc4984489d81bc742188d8e214bea/64134611622.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_off0000d326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD326 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 10904 bytes
SHA-256: e4528810314f8e1ce084d2a6474c6cf8c052b6e72a22c4cae24c2c2ce8c94d6e
font_02_sfnt_off00010456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10456 17872 bytes
SHA-256: 781d796d8d731e5929539d1941c56f6d98e4237e83ec2b51763b54bdfbd8574f

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