Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b60ea7a75ca096…

MALICIOUS

PDF

101.6 KB Created: 2021-02-09 23:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 049d7242bd896834719d36709d8129cc SHA-1: 74ad5ccd3de2de2abb2036ecc4fcd6fef38aeb0d SHA-256: a6b60ea7a75ca09638de5570695062bbfc0689513f2bbc0e75dd724735a29ad6
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8463

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
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://seumenha.ru/aws?utm_term=cps+online+report+texas
    • http://lafovug.iblogger.org/carrier_air_conditioning_instructions_manual.pdf
    • http://deutschebank-meine.com/73266272560qkjn9.pdf
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fe9fd350ecef.pdf
    • https://cdn.sqhk.co/zujumatatub/fVgjjRZ/can_hitting_your_cervix_cause_bleeding.pdf
    • https://rixafewokeget.weebly.com/uploads/1/3/0/7/130739987/6266655.pdf
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5fc6b56317f1d.pdf
    • http://iceteas.space/gotikatifiseob29b.pdf
    • http://wavasesinile.22web.org/risafewaxomovuzexusuwabu.pdf
    • https://cdn.sqhk.co/vatepasoxi/aPsPGgd/24594348836.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://lutaretubonen.rf.gd/best_android_rpg_games.pdf
    • http://mivevusewez.epizy.com/62517567583.pdf
    • http://vagilamiporaw.epizy.com/ramasoki.pdf
    • http://rokodejufoda.rf.gd/65503680038.pdf
    • http://worined.epizy.com/aranjuez_music_sheet.pdf
    • http://likasiz.epizy.com/blood_type_diet_free.pdf
    • http://kuparego.rf.gd/tigid.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000151ac.bin
2028d21669380b6431bb0fa1dc54acf90cfe692db67ebdfdecbdd6045b6b294d
pdf-font-stream PDF embedded font (sfnt) at offset 0x151AC 4692 bytes
font_01_sfnt_off000161a4.bin
f9d2cff5d68b068fa7226649302aaebfd127ccf30bdf25768ad266ab1504dbc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x161A4 11496 bytes
font_02_sfnt_off000188ae.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x188AE 4324 bytes