Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdcab3055e4271c5…

MALICIOUS

PDF

37.0 KB Authoring application: Solid Converter PDF
MD5: b3626354986584f9849ffa0691a59ee0 SHA-1: 5e55d93c8462d7ffa6cc6e5e184f8d6ea844c6f3 SHA-256: bdcab3055e4271c5368b0215c068d1044f3fd25d8c6802136d349ad4273bc99d
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. The ML classifier and ClamAV detection strongly indicate maliciousness, consistent with a phishing or SEO-based distribution scheme. The embedded URLs are the primary indicators of compromise, likely serving as lures or redirects to malicious content.

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://crumbsycookie.com/uploads/1/3/0/3/130313324/tatigumom.pdf
    • http://pathblazer.org/uploads/1/3/0/6/130621187/tivelu.pdf
    • http://english-log-cabins.com/uploads/1/3/0/6/130621436/6219455.pdf
    • http://naturalbugblock.com/uploads/1/3/0/6/130621077/a1a9f537d228.pdf
    • http://myangelabartlett.com/uploads/1/3/0/6/130620865/2161768.pdf
    • http://blinddoghaven.net/uploads/1/3/0/4/130435850/835820.pdf
    • http://theacneandskincareclinic.com/uploads/1/3/0/6/130603865/risetegizagafi.pdf
    • http://bourioanatoliesfilms.net/uploads/1/3/0/5/130550654/291453296819.pdf
    • http://servpro-philippines.com/uploads/1/3/0/2/130272500/835c8e55a1b45.pdf
    • http://airstreaml2004jl.com/uploads/1/3/0/6/130604640/dbcd4075d34.pdf
    • http://selmazulma.com/uploads/1/3/0/5/130547450/9274649.pdf
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/7/130739162/130739162.html#relative+clauses+activities+esl

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001287.bin
3b6c93d173d6b2e09dd1f1f6bf193db5c3220168b755604d2f747d50256f07e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1287 7992 bytes

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