Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb9c1bd40b65340…

MALICIOUS

PDF

35.6 KB Authoring application: PDF Studio
MD5: 622357c7bef834592a52b2be8c52d1f7 SHA-1: fce93a7c14d244d3581e6db5d7816dbfbf796da7 SHA-256: 3cb9c1bd40b65340a48548e70563bf9356bd6eabe7e92a273a471b1c7170db08
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous embedded URLs pointing to external PDF documents. This technique is commonly used for SEO poisoning or to distribute phishing content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. No scripts were extracted, but the sheer volume of outbound links suggests a traffic-driving or redirection mechanism.

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://myteslawraps.com/uploads/1/3/0/2/130291884/2367199.pdf
    • http://sittingwarrior.com/uploads/1/3/0/4/130489051/b77373aa8.pdf
    • http://www.gendernaturalist.org/uploads/1/3/0/6/130639934/a0205.pdf
    • http://bityeti.com/uploads/1/3/0/6/130620763/masabemax_wajibewip_dosemar_rizore.pdf
    • http://glendalemenssuit.com/uploads/1/3/0/4/130476454/7965818.pdf
    • http://smalltubeparts.com/uploads/1/3/0/6/130620340/vivef.pdf
    • http://dancefusioncc.com/uploads/1/3/0/7/130776367/kofenopipofadas-lafizafesez.pdf
    • http://suryani45.com/uploads/1/3/0/4/130436074/6134000.pdf
    • http://lapixelstudios.com/uploads/1/3/0/5/130588769/7576184.pdf
    • http://nicolemartinetti.com/uploads/1/3/0/6/130603895/f97481ff5.pdf
    • http://selfdefenseendeavors.com/uploads/1/3/0/7/130738855/posutosava_jokupuzepafirom_xukowe.pdf
    • http://letterhunt.com/uploads/1/3/0/7/130739879/3113071.pdf
    • http://biglifecc.com/uploads/1/3/0/3/130313504/89ccd3926.pdf
    • http://groupejobinassurances.com/uploads/1/3/0/2/130287992/6310926.pdf
    • http://gostudiom.com/uploads/1/3/0/5/130588654/webamol.pdf
    • http://carpetcleancary.com/uploads/1/3/0/6/130604935/130604935.html#what+are+10+abiotic+factors+in+a+biome

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031cc.bin
e11321cbdb8e32cf5c655ff4846babfab31d86abb677dc86b794f8a16a67d45a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31CC 7500 bytes

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