Malicious PDF — malware analysis report

Static analysis result for SHA-256 0768e2e236c2d161…

MALICIOUS

PDF

190.9 KB Created: 2021-06-20 03:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8cfe9e2ecd14da276b524af2c335a4a3 SHA-1: 9561912af4320d949fa7aba28a2f1dcfb6bff58c SHA-256: 0768e2e236c2d1611d5c6a74712cce212bd9763b725c63e54050186c3bbab4a7
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1534 Steal or Forge Credentials

This PDF document was flagged by multiple heuristics as a credential phishing lure impersonating Microsoft. It contains numerous links, many pointing to compromised CMS upload directories, suggesting an attempt to host malicious content. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a trojan designed for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=garry%2527s+mod+free+android.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a75296141a4---fovumivetedap.pdf In PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/bb1381273c0056e13d7194db97a8cbf9/63135117793.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/fichiers/gigawu.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/junukemapoliv.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ee4db5f14---pojixex.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/5697a9198ffb2e6315b9f9aacef94526/57795095362.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607750a592ae5---xotitas.pdfIn PDF document text
    • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/0fd5d8aeb7858c02780efbe5fa838aff/jeripenidovexelugoteke.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/5f92b2a8fe87518e69ef3d2602c936ff/waxiwerigoxepimatug.pdfIn PDF document text
    • https://lasanisports.com/files/binariwiwajemagalonudot.pdfIn PDF document text
    • http://usagimatur.com/files/others/12641051820.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/pugovekobasaxibuwugiguma.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lmnp6fb2d3bs85pms9bl7rb1o1/zusudemabexigodigisineja.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/ug0aja6ag9ojvp10vl2la9d8m7/sojevuvov.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16070a0b8eefa6---puxar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=garry%2527s+mod+free+androidPDF link annotation
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002a474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A474 3596 bytes
SHA-256: 02bafe7dfdd2007f06b8f58ade51085144160725e4a38af10344c81af6e0b356
font_01_sfnt_off0002b13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B13B 5188 bytes
SHA-256: 6ef8a3e2b79b3645ed9864b70e5b58ab83bc9829d65b8548df3fef15874c68d9
font_02_sfnt_off0002c2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2DD 12048 bytes
SHA-256: 853527789e9fdb4c9b33051fd42b522899305144a924382165b57b472a13d1da