Malicious PDF — malware analysis report

Static analysis result for SHA-256 f529e93a527b8d17…

MALICIOUS

PDF

57.5 KB Authoring application: Pdftk
MD5: ac906413f897eeb878916d2371024754 SHA-1: 1bd7943ad61cda2540f4783a90454bff4fc6af79 SHA-256: f529e93a527b8d1771ac507dd05a147c624758eb5d485bd0f8e2a5a30c1740b9
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF_SEO_LINK_FARM heuristic identified a large number of external links, with the first being http://bossmacc.com/uploads/1/3/0/7/130739214/jemib.pdf. This suggests the document's primary purpose is to distribute links, likely for phishing or malware distribution, rather than providing meaningful content.

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://bossmacc.com/uploads/1/3/0/7/130739214/jemib.pdf
    • http://rachaelhudes.com/uploads/1/3/0/6/130621337/kumiketonazitewome.pdf
    • http://nadiabakes.com/uploads/1/3/0/2/130273931/mazotixorumut_nujudigul_faloruwiboruzij.pdf
    • http://risenchristfamily.org/uploads/1/3/0/7/130738984/weliwawidux.pdf
    • http://freebearproject.org/uploads/1/3/0/8/130873943/c5487a2efb5.pdf
    • http://augrio.ai/uploads/1/3/0/3/130379821/burag_binetogu.pdf
    • http://dreaconti.com/uploads/1/3/0/5/130540214/9041156.pdf
    • http://apartmentsbastion.com/uploads/1/3/0/4/130476483/04296fb1d921078.pdf
    • http://returningtocompassion.org/uploads/1/3/0/4/130476145/kedaguruvazo_wuxasola.pdf
    • http://keyluxrealtygroup.com/uploads/1/3/0/6/130620399/tupulo-tafowes-girewiped-vigigem.pdf
    • http://rootdesigns.net/uploads/1/3/0/2/130289292/ceb994f.pdf
    • http://copyright-form.com/uploads/1/3/0/8/130814050/morizageradaxepalu.pdf
    • http://richardgeraffo.com/uploads/1/3/0/5/130551378/8886189.pdf
    • http://undertheoaktravelllc.voyagerwebsites.com/uploads/1/3/0/7/130776399/130776399.html#code+gta+san+andreas+sur+ps2

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001393.bin
2f9ddf452749b6f7cfbb4ffedccfe2a154c61b4936e6d30a1ef3cbbaaa0586a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1393 8292 bytes

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