Malicious PDF — malware analysis report

Static analysis result for SHA-256 5baee7ffb8343b9f…

MALICIOUS

PDF

79.5 KB Created: 2021-06-29 22:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: ef58e719f89bfacd35d15361c5b18cad SHA-1: 5e6c253179c53381593a1c95e14d073c741345d4 SHA-256: 5baee7ffb8343b9fbe55a9103a8fab7a591f2439e63e3517b973393a46d0062b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://coretry.ru/uplcv?utm_term=riot+insurance+coverage PDF link annotation
    • http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/dekasiguvuvuni.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/2b3ue07gtcrqeqen2ph9a8v7c5/dalisu.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/a32e696bdb8b336c2b44bc66183c9f8e/sejuraledazubemamenagip.pdfIn PDF document text
    • https://maisonforville.be/documents/file/78371264730.pdfIn PDF document text
    • http://phukhoabacninh.com/images/files/petepogunugiwijunenuxa.pdfIn PDF document text
    • http://ladakhtripmaker.com/userfiles/files/52174909567.pdfIn PDF document text
    • https://leanuslab.com/UserFiles/file/63662846151.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/nirosudukufikabokirimab.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082fac33b079---lanozalurut.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/jaxuwiguxul.pdfIn PDF document text
    • https://bangprice.com/bangprice.com/beta/cms_image/file/nebujexo.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16071c334e0564---18053491285.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cb38f0a8e---40489098277.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160769bc49af51---fejodusejuxamafukenopakip.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/fepeginamulilapiges.pdfIn PDF document text
    • https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/29240356445.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/suguzorefisodobozunuwo.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/cf7d19cbffe66cbeb0a0c8bebb4dbef1/jikafujukabilujebaf.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160796d513ba86---defesusogijoxujowa.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/3tgn5ae87lgmpsht4nkkg4mnu7/24902103823.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/44401543756.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/d9eb99b7e5f05a0ca5b623bcbe49b2fa/93901091084.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/ekiij0urv27kgehu0oj8866ela/tisitupadafosu.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_off0000d433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD433 16604 bytes
SHA-256: 5212ee885c42ff68f050518cf1c174c459e2bae9001243ec73ba6ed341c700a8
font_01_sfnt_off0000ff1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11731 10568 bytes
SHA-256: f5104ae34429287e4bd74ac70d7ba1dd3dcd33ee27e7f6f12aadcbafb14e8b6d

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