Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a750e5bb6296da…

MALICIOUS

PDF

39.8 KB Authoring application: Poppler-utils
MD5: 2775344368b130c0d87ad8bf50a8015f SHA-1: a335982f4318f767db18c02093f1f21c2b7d68da SHA-256: 47a750e5bb6296daf876ca7d291eefe78d37824f61f365404736973681403674
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for SEO poisoning or phishing. The ClamAV detection and ML classifier further support its malicious nature. The document body, though partially corrupted, suggests a lure related to PDF editing, likely to mask the malicious link farm.

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://rexusconsulting.com/uploads/1/3/0/6/130605267/gofuk.pdf
    • http://westresearch.org/uploads/1/3/0/5/130550814/puvefivuvujuvor.pdf
    • http://shizenfurniture.com/uploads/1/3/0/4/130476143/38ebcb5.pdf
    • http://ophsclassof1999.com/uploads/1/3/0/5/130546333/8684118.pdf
    • http://globalwarming1.com/uploads/1/3/0/2/130291474/5590634.pdf
    • http://safehairdye.org/uploads/1/3/0/3/130379428/zifetafew.pdf
    • http://www.coralsunaviation.net/uploads/1/3/0/7/130775456/wiwudufuxasebij_jumogu.pdf
    • http://new-style-trailer.com/uploads/1/3/0/5/130542936/ab95c03.pdf
    • http://cwhypnotherapy.com/uploads/1/3/0/7/130775635/7066433.pdf
    • http://cyclingretreats.com/uploads/1/3/0/7/130740001/7525757.pdf
    • http://oceanviewlotuvita.com/uploads/1/3/0/3/130323998/7807433.pdf
    • http://spotsbay.com/uploads/1/3/0/7/130775800/47a48309e46.pdf
    • http://mrscjp.com/uploads/1/3/0/5/130551585/9318506.pdf
    • http://nicolettemurin.com/uploads/1/3/0/8/130814070/xebiwunirojo_nukewakizugas_dojupafameseg.pdf
    • http://atlantaasta.voyagerwebsites.com/uploads/1/3/0/6/130604520/130604520.html#how+to+change+text+size+in+pdf+text+box
    • http://safehairdye.org/uploads/1/3/0/3/130379428/zifetafew.pd
    • https://www.pdfescape.com/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004150.bin
4bac3dc092501409ad85a0f5715d7cdf75bcbe3817377778ae40384364cf4046		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4150 8252 bytes

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