Malicious PDF — malware analysis report

Static analysis result for SHA-256 11468356118d9444…

MALICIOUS

PDF

41.9 KB Authoring application: ImageMagick
MD5: fc3a0503993158c6db1691579e41ba32 SHA-1: d8e366033155af38b91737158ad7fdc604c8aca9 SHA-256: 11468356118d9444e9c5b681813a8760d1e88c034da7b54c3a9bd3909bb335e8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or SEO abuse. The document body is heavily obfuscated and contains no clear instructions, but the presence of numerous external PDF links suggests a campaign to redirect users to potentially malicious or spam-controlled 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://hostmaster.bestexpressions.co.uk/uploads/1/3/0/7/130739375/d7782a317.pdf
    • http://beebear.com/uploads/1/3/0/7/130775047/c7c2a06a89a7.pdf
    • http://elliemaysgrowingupridgeback.com/uploads/1/3/0/7/130776734/5688453.pdf
    • http://newyorkcityspeechtherapy.com/uploads/1/3/0/6/130621300/banezurizaxemusonuw.pdf
    • http://wallepikkers.nl/uploads/1/3/0/7/130776875/javedisop.pdf
    • http://dontdate-her.com/uploads/1/3/0/6/130603913/220f6.pdf
    • http://www.share-the-story.com/uploads/1/3/0/6/130620320/vobegipijutevon.pdf
    • http://twoandtwocompany.com/uploads/1/3/0/7/130775249/najajagopokosobakabe.pdf
    • http://www.hcm.cloud/uploads/1/3/0/6/130622095/fd41185cf.pdf
    • http://sararolsma.com/uploads/1/3/0/6/130621376/tegobunaso_xilowo.pdf
    • http://julienlmeyer.com/uploads/1/3/0/4/130488833/wodugapex.pdf
    • http://garypilafas.com/uploads/1/3/0/6/130604243/xomuboput-luvalu-fijopamaz.pdf
    • http://gdouglastimberhaulage.com/uploads/1/3/1/0/131070842/30cad2c384.pdf
    • http://mminstitutedsn.com/uploads/1/3/0/6/130604636/9447ff78eacf1e.pdf
    • http://katiaponomareva.com/uploads/1/3/0/5/130590664/130590664.html#ableton+live+10+suite+upgrade+from+live+intro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b08.bin
200c65ee940bad147f887245cf4eab811f1a2e83c2a94de5a2a9e23fdd35fd4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B08 7816 bytes

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