Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1684db2756867fd…

MALICIOUS

PDF

37.2 KB Authoring application: QPDF
MD5: 14a7fa714e4a46d5063c89ecf3ebe310 SHA-1: 239aa3461614fe5f37b381d2149a362178a7e120 SHA-256: e1684db2756867fd07537656159e91778a4c29c5d91063f7a3db0d770dd4b770
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection further confirm its malicious nature, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The document body is heavily obfuscated and contains what appears to be junk data, but the presence of numerous external PDF links is the primary indicator of malicious intent.

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://cargo-toolkit.org/uploads/1/3/0/2/130288751/2510038.pdf
    • http://www.canadaquestexcursions.com/uploads/1/3/0/8/130813784/718cabb5b7c3.pdf
    • http://faithful32x32.com/uploads/1/3/0/5/130544954/9447124.pdf
    • http://www.whowhatbenwhy.co.uk/uploads/1/3/0/6/130639062/gekejem.pdf
    • http://www.jtmproperty.com/uploads/1/3/0/5/130548070/biwevizovipebakut.pdf
    • http://thijsottens.com/uploads/1/3/0/4/130483583/budexarutamemuwoga.pdf
    • http://blueprintseo.com/uploads/1/3/0/7/130738948/dopeg_matedabin_jidid_pemonuzusa.pdf
    • http://vegamala.net/uploads/1/3/0/7/130740062/7205de4.pdf
    • http://raychavez.net/uploads/1/3/0/6/130604511/gunobaduxuja-majoxuveriwur.pdf
    • http://goodguysfilm.com/uploads/1/3/0/4/130435629/342583.pdf
    • http://nordicwalkinglondon.com/uploads/1/3/0/3/130323485/2414683.pdf
    • http://os-dw.com/uploads/1/3/0/4/130475909/3616314.pdf
    • http://goodgets.com/uploads/1/3/0/6/130621334/d65cdd3a675.pdf
    • http://nebuchadnezar.com/uploads/1/3/0/5/130551611/bofasekapuro.pdf
    • http://hungryhatch.org/uploads/1/3/0/5/130589020/b61b2.pdf
    • http://alanakolb.com/uploads/1/3/0/6/130639553/d1182f68539852.pdf
    • http://rockedbottoms.com/uploads/1/3/0/7/130776535/976d18e.pdf
    • http://mikaren.com/uploads/1/3/0/5/130588718/dotusefe.pdf
    • http://liveloveyoga.ca/uploads/1/3/0/7/130738720/81492e4a0400.pdf
    • http://bethanystafford.com/uploads/1/3/0/6/130621127/a96c5d68.pdf
    • http://artworkrunner.com/uploads/1/3/0/6/130605125/9877724.pdf
    • http://houserentalreviews.com/uploads/1/3/0/6/130603814/rufavukoka.pdf
    • http://mahmoudawad.net/uploads/1/3/0/7/130775704/5011523.pdf
    • http://host12.pleasingfood.com/uploads/1/3/0/6/130605430/130605430.html#easy+pop+music+sheet+for+piano
    • http://houserentalreviews.com/uploads/1/3/0/6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f9c.bin
73818218be5a571789d732dca0fd6bef55b50589319cb90824eb2ec92e902141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9C 7876 bytes

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