Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c95a36400c3dd4c…

MALICIOUS

PDF

65.8 KB Created: 2021-06-22 12:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: aaf35526c87bdfd3ccbf6efd9ea6a134 SHA-1: 5fd65f6632e26379ef27158f0e900d8bf856aff9 SHA-256: 7c95a36400c3dd4cc3650f424404d27b0a66c466f1f6b4e148dafe13f31dd5e3
154 Risk Score

Malware Insights

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

The PDF document contains numerous links to websites that host downloadable files, many of which are hosted on compromised CMS platforms. The document body, though heavily obfuscated, appears to be a lure for downloading 'gta vice city apk download pc'. The presence of multiple links to potentially malicious or compromised sites indicates an attempt to redirect the user to a malicious download. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8307

Heuristics 5

  • 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
  • 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 http://sola-brothers.com/userfiles/file/44763949622.pdf In PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/4e61d64208b9b88a108b5dfcbf49fc3c/nujixipusab.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/7vv12sd6dtmjqqu7v5roitoqr0/pilararitevokow.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/netuka.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/b9f78efc67fde0eb070dd1d5df589fa9/59458150644.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/wamizi.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f03e91d36---newinipe.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file/%5C/2021051143353_203428206.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/n0f9da313446f0av496npgqa25/wabakavi.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b143b5c00---tomezodoxulakagezofo.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4b0123123---livelupog.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/a0acc07a87285deb07151496bc5d04fd/84766445171.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/19b8b08b1e2a32a2d6397d5ee122c519/93418486304.pdfIn PDF document text
    • http://yoron.net/up/files/letapetajojinosaxovalata.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file/%5C/2021062218420_220215641.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/DOqCt-cVA4I/uplcv?utm_term=gta+vice+city+apk+download+pcPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDB 5140 bytes
SHA-256: a6addf948a99fc54cbe595be6b547b35e229d51ad2dfe604dfe05fe5cfeebe43

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