Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db825e27249050d…

MALICIOUS

PDF

34.2 KB Authoring application: GIMP
MD5: a388a63147d4dea66e2a5ddd20e3ee87 SHA-1: 273c978fb6f085e9314ca53f96db85e149c4b0c1 SHA-256: 1db825e27249050deb61c378cbf280a60e7d12e122a8e73846103ecbcf48b51d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are likely part of a campaign to redirect users to further 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://bosplumbing.com/uploads/1/3/0/6/130605080/lepimiviwo.pdf
    • http://mx.tminz.net/uploads/1/3/0/6/130605289/8964965.pdf
    • http://foundationalwellness.info/uploads/1/3/0/8/130813663/wakonaru.pdf
    • http://www.dogdude.org/uploads/1/3/0/7/130738943/pomon-mediduxufarese.pdf
    • http://yamashitamami.com/uploads/1/3/0/4/130476491/70ba2ba.pdf
    • http://johnnyryanmusic.com/uploads/1/3/0/4/130476652/pezurabaf.pdf
    • http://freshbibs.com/uploads/1/3/0/2/130289380/gavol.pdf
    • http://www.arcflashconsultant.com/uploads/1/3/0/2/130287937/dozijesubokud.pdf
    • http://theshiatsuroom.co.uk/uploads/1/3/0/4/130488311/porasuk.pdf
    • http://facefeats.com/uploads/1/3/0/6/130621746/nubiku.pdf
    • http://74-123-79-136.mgwnet.com/uploads/1/3/0/6/130639592/130639592.html#s13+power+window+wiring+diagram

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000305a.bin
bad0b260096b25ece0e2b83315f3da8e2ee07c4acf094ece073190acc19c9f19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x305A 7688 bytes

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