Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a5f74772f035ed…

MALICIOUS

PDF

32.3 KB Authoring application: Inkscape
MD5: 990b69218e2bb32d1d05ef49b1dd1bbc SHA-1: 54c7fd7b9c793147f5b4c762f8ea5eaa8ee216fa SHA-256: 91a5f74772f035ed1a647f63a369d2e16084a657f874b1cea8fc3d799c3764aa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://4gkingdomliving.com/uploads/1/3/0/4/130478009/jezutitepipo_nuwekuverinav_jasetimopi.pdf
    • http://noso.pandora-sales.ru/uploads/2020/01/28/0c1f736b890d2f1.pdf
    • http://mingosmisdeeds.com/uploads/1/3/0/4/130483413/ginilubokix.pdf
    • http://queenalyona.vip/uploads/1/3/0/4/130435925/zuxukinul.pdf
    • http://xur.leads-russia.ru/uploads/2020/01/28/735dda5c7598.pdf
    • http://jurongdistrict22.com/uploads/1/3/0/5/130588923/jinesoxile.pdf
    • http://oldpixhamschool.com/uploads/1/3/0/5/130588773/xazuger.pdf
    • https://wipewilimed.weebly.com/uploads/1/3/0/4/130489742/nugonikeginawejujaw.pdf
    • https://mebiduniriza.weebly.com/uploads/1/3/0/3/130323552/6b7c2b3ad82.pdf
    • http://thedeanshow.net/uploads/1/3/0/4/130435962/kaxiwedikefife.pdf
    • http://cleanandleanmixes.net/uploads/1/3/0/2/130270738/0b4f2fe09ca81e.pdf
    • http://erlamb.com/uploads/1/3/0/6/130640190/982b893ce176c97.pdf
    • http://premierbv.com/uploads/1/3/0/5/130550801/79662d6972cb2.pdf
    • http://missgojo.com/uploads/1/3/0/6/130639883/5146254.pdf
    • http://jogekebe.paradise-hotel.ru/uploads/2020/01/29/385392067.pdf
    • http://cyannereviews.com/uploads/1/3/0/4/130435962/nikemaxadiji.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/5/130550995/130550995.html#exponent+rules+worksheet+8th+grade+answer+key

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ef.bin
da85361e4368ca1e38eec04393f3bd30516c51d23db2c3827927ef2033f03799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF 6888 bytes

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