Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa584f599408a9ae…

MALICIOUS

PDF

45.4 KB Authoring application: QPDF
MD5: a615261769e7e9c34a0998684f6d241c SHA-1: aa3c9555b3a241793a9f2aa739fbdcbf8a2d9ca4 SHA-256: fa584f599408a9ae389d817507644c7b4c2cd4d2bc03042937ed3b5bc1edd546
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link farm containing numerous external PDF URLs. The ML classifier also assigned a high probability of maliciousness. The embedded URLs suggest a phishing or SEO abuse campaign, where the document itself may be a lure or a redirector to malicious content hosted on these external domains. No scripts were extracted from this sample.

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://bearsvbabiesgame.org/uploads/1/3/0/6/130639668/paxamoxik.pdf
    • http://westcoastpowerwashing.com/uploads/1/3/0/5/130551607/xipunu-kugifeninujak-dumeluruduresej-jenel.pdf
    • http://bashfitness.com.au/uploads/1/3/0/5/130550879/494750522e65.pdf
    • http://strawberrycookienv.com/uploads/1/3/0/2/130287988/3552512.pdf
    • http://ruanntiller.com/uploads/1/3/0/6/130620712/4097880.pdf
    • http://koppsinmalawi.com/uploads/1/3/0/7/130775837/3042d5700433a.pdf
    • http://nokia-review.com/uploads/1/3/0/5/130543766/7281759.pdf
    • http://motonorm.com/uploads/1/3/0/7/130776201/bagazepibodarub.pdf
    • http://delarkiltd.com/uploads/1/3/0/4/130483370/7452279.pdf
    • http://verticalfitness100.com/uploads/1/3/0/4/130483239/d3920415f61.pdf
    • http://freerunbasics.com/uploads/1/3/0/6/130639626/tenivekowu.pdf
    • http://danahalllcpc.com/uploads/1/3/0/6/130639407/5203913.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/2/130271219/130271219.html#iceland+golden+circle+self+drive+itinerary

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001330.bin
ce327c20a18e369db0e5d52b19c1a3bb4930b8ca61501dbdf56cef1e246dee3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1330 8804 bytes

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