Malicious PDF — malware analysis report

Static analysis result for SHA-256 18b44f070bdae48f…

MALICIOUS

PDF

34.8 KB Authoring application: Poppler-utils
MD5: 0b91b595a36eb73f39f3c438411b36c5 SHA-1: 9e37eb862681d77e896ea789e5135618dc8e420c SHA-256: 18b44f070bdae48f20ad6e5b8d26da24add005b1cfbb3718de41c633aa8537d5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This behavior is often associated with SEO manipulation or the distribution of further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

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://projectforereach.com/uploads/1/3/0/4/130488067/zafijefaluxub-kesafugaxidonil.pdf
    • http://www.modelsenden.com/uploads/1/3/0/5/130589108/8424339.pdf
    • http://roanokechoristers.com/uploads/1/3/0/6/130604273/751d90.pdf
    • http://gatesbydale.com/uploads/1/3/0/2/130272369/jifumoraxex.pdf
    • http://bookhook.org/uploads/1/3/0/6/130639530/418847.pdf
    • http://bluesmasters.club/uploads/1/3/0/4/130483263/177f46c.pdf
    • http://cherryhilllawncare.com/uploads/1/3/0/7/130739233/defaxiniwitozewuvuv.pdf
    • http://knllongwood.com/uploads/1/3/0/6/130620609/regapak.pdf
    • http://mindfuldemocracy.com/uploads/1/3/0/5/130550961/sabezaguda.pdf
    • http://ketore.com/uploads/1/3/0/7/130740117/litaxikuberimi.pdf
    • http://nadiafarah.com/uploads/1/3/0/6/130621648/b2f6ad4.pdf
    • http://myforexleague.com/uploads/1/3/0/4/130436074/pesogoruwosugot_pefejeke.pdf
    • http://akiysvignettes.com/uploads/1/3/0/5/130590117/nudixuromo-damesotivu.pdf
    • http://74-123-76-60.mgwnet.com/uploads/1/3/0/6/130639954/130639954.html#factoring+trinomials+coloring+activity+key

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cd1.bin
172ffdc8d36cafd7e9b3865661e3f4769e79b9119d77843846b981fd492983bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD1 8636 bytes

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