Malicious PDF — malware analysis report

Static analysis result for SHA-256 562ceea6230d71cf…

MALICIOUS

PDF

34.6 KB Authoring application: Serif PagePlus
MD5: 2d85eb7216b53046dbd2ef293d0312c9 SHA-1: 91280e9579345df48c1f8e6734e7f8cf32200b78 SHA-256: 562ceea6230d71cf4f500e13825a894baa706dd9ca22b3d90da5c838aee01301
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a common tactic for SEO poisoning and phishing. The document body, though partially obfuscated, presents itself as an academic worksheet, likely a lure to encourage users to click the embedded links. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or malware distribution.

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://fernandoporretta.com/uploads/1/3/0/4/130436439/pesodatexunovikogu.pdf
    • http://oreginconference.com/uploads/1/3/0/6/130639553/laduwijotak_niwelefuj.pdf
    • http://takebackministries.com/uploads/1/3/0/5/130589100/sowegugutibofof_salirogak.pdf
    • http://color-paper.com/uploads/1/3/0/6/130620390/1099262.pdf
    • http://create218.org/uploads/1/3/0/2/130271116/xuxuxixej-benodiguribaleg-guzofowera-wezitasunulit.pdf
    • http://saulmendozaphoto.com/uploads/1/3/0/6/130620956/bdc55067f.pdf
    • http://kevinskids.org/uploads/1/3/0/7/130776677/zakivugesife_wujutete_sedadowuxudovuw.pdf
    • http://reperike.neobotanic.com/uploads/2020/01/29/xagewugemunil_jukelujor_jefemew.pdf
    • http://mslangseportfolio.org/uploads/1/3/0/5/130551630/wosaweke.pdf
    • http://miami.momotombochocolatefactory.com/uploads/1/3/0/7/130775845/130775845.html#identifying+types+of+intermolecular+forces+worksheet
    • http://miami.momoto

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001291.bin
984a56f670c3b86c83fec0903d2ae010c994d419fe6fcc0389907672013dfd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1291 7984 bytes

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