Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a3eaba3674387f…

MALICIOUS

PDF

44.6 KB Authoring application: Mobipocket Creator
MD5: 27d027a4fca37c468adb21d6fded4272 SHA-1: e86f7fb21f5a053532f7e9ecbe7c68203928a074 SHA-256: 54a3eaba3674387f11f950857f94e0e00538e956458835c3f49b30c06b4cc625
152 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, with critical heuristics indicating it functions as a link farm. The document body contains numerous embedded URLs, with the primary one being http://vintagechicanew.com/uploads/1/3/0/7/130740200/zadebabax-lazivewoni-davolej-zotev.pdf. This suggests the file's purpose is to redirect users to a large number of external resources, potentially for malicious distribution or SEO spam.

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://vintagechicanew.com/uploads/1/3/0/7/130740200/zadebabax-lazivewoni-davolej-zotev.pdf
    • https://reruguzupitu.weebly.com/uploads/1/3/0/4/130436272/luzitisubekuwef.pdf
    • http://perfeccionatupiel.com/uploads/1/3/0/2/130271067/metikalep.pdf
    • http://nuluxazo.vipdating.icu/uploads/2020/01/27/653484.pdf
    • http://medecinesbizarres.net/uploads/1/3/0/4/130483616/xilibabozetimus-tibabajo-davuzusonomotud.pdf
    • http://collier-pave.com/uploads/1/3/0/3/130379465/mokitofozutokov-gesabomovup-raval.pdf
    • http://consulatcotedivoire.com/uploads/1/3/0/5/130590770/1937372.pdf
    • http://lamplify.net/uploads/1/3/0/4/130489248/9635543.pdf
    • http://canuplaysports.com/uploads/1/3/0/5/130590096/wojofibu_xesozuru_zinitipugoj_topafo.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/5/130551001/130551001.html#aphis+form+7001+spanish

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001473.bin
8552f20eed39226b5d1115db259a19201eb7b6ab087df2c3c8b9d465e302da5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1473 9124 bytes

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