Malicious PDF — malware analysis report

Static analysis result for SHA-256 769fb0d50f84d80d…

MALICIOUS

PDF

35.4 KB Authoring application: Adobe PDF Library 9.0
MD5: 3e99040cfe8756abec51d1f066e4e5d1 SHA-1: fc2990a8a590da90069951a0c352505f8ef5b887 SHA-256: 769fb0d50f84d80dac6392ff250076cdede909b7157d5f6c2864be9f2a749824
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this file as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and an ML classifier also flagged it with high confidence. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://zofe.fr/uploads/1/3/0/6/130604766/resisare_jelivoxotogoru_wazefu.pdf
    • http://tabithasdesigns.org/uploads/1/3/0/2/130289721/1d14c3bc058bb.pdf
    • http://tylerdsmith.org/uploads/1/3/0/4/130476089/1a0de42e6.pdf
    • http://tbc.group/uploads/1/3/0/6/130605501/wubizixezojusiz-xukuxavubewabo-xuzemuvetelad-xazilobir.pdf
    • http://guzupe.yusufkalayci.com/uploads/2020/01/28/3402933.pdf
    • http://bestforexrebates.com/uploads/1/3/0/4/130435500/b08483e1595e98d.pdf
    • http://drpatty.net/uploads/1/3/0/4/130476423/130476423.html#modal+verbs+to+express+obligation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113a.bin
8707ed5fec8c309ef6a62aa2cb0320511aff2e07b9121a82fca492cecc161699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113A 8072 bytes

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