Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0ff37f71de3c7c…

MALICIOUS

PDF

64.0 KB Created: 2020-12-16 15:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 419f006e4aa0c4ff028aa94128a5bf55 SHA-1: 2a907c5641675720de5398d898a4f360fc6dbfbc SHA-256: 3d0ff37f71de3c7cc2c9297d766f9bd2f2bd1b542ba4a9ba2291058bfa1088f9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are to PDF files, suggesting a link farm or SEO manipulation tactic. The primary URL, https://traffset.ru/strik?utm_term=honeywell+ceiling+fan+reviews, is suspicious and likely leads to a phishing or scam page. While no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of malicious intent, possibly to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9729

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://traffset.ru/strik?utm_term=honeywell+ceiling+fan+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387807/normal_5f9369b7a53d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86fe659cdb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5faa1c707d739.pdfIn PDF document text
    • https://dusexitope.weebly.com/uploads/1/3/4/6/134646398/9944119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5fcc61890080d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_5fcf93cbaa344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471512/normal_5fbe295a412cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fcd51a0cd2dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/18452237175.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/74039796554.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/wallpaper_hd_pubg_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b11a8d3-a647-4717-890e-12e9fff64389/56825559194.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/whack_your_boss_2_unblocked_games_77.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/family_vacation_itinerary_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d750ed-05e4-4cbf-babb-9e44da6c4375/vetidobapud.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD1 5264 bytes
SHA-256: 806f06c13a44c17ec362ef0f69ede2e91d2888e21f6cc57c017c89bac4b22619