Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a58a3d1db0f1ce9…

MALICIOUS

PDF

42.0 KB Authoring application: pstoedit
MD5: b80e3b01bdc93154b111c416994ac6d2 SHA-1: 77533f3aa66edd623d81a7f2dd458e7dce258ac7 SHA-256: 2a58a3d1db0f1ce9138f6ce0e5aaf68a55f6ab49ee636f0304c0a660af9cbdcd
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or redirection scheme. This behavior is consistent with phishing or malware distribution campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to traffic generation or phishing.

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://sportrock.org/uploads/1/3/0/7/130738883/sosugorazadido.pdf
    • http://besmokefree.co.nz/uploads/1/3/0/3/130379509/zudimisejovivas.pdf
    • http://macdesignthinking.com/uploads/1/3/0/6/130604258/7377460.pdf
    • http://at9x.com/uploads/1/3/0/7/130776077/177d12a.pdf
    • http://mta-sts.mx.michellepiano.com/uploads/1/3/0/5/130589449/fodexilu-saloramofo-lotakefarovu-nafovet.pdf
    • http://ndhumanities.org/uploads/1/3/0/6/130604314/d7df7270f9.pdf
    • http://ahahnart.com/uploads/1/3/0/5/130539205/ecc04e40f593f80.pdf
    • http://www.nutricionintegralmorelia.com/uploads/1/3/0/7/130740412/lumobamowewixev.pdf
    • http://travelindepth.com/uploads/1/3/0/7/130776381/8b71a4b200e946.pdf
    • http://kittoconsultancy.com/uploads/1/3/0/6/130621937/e8c73b699b9537.pdf
    • http://colorbrushcanvas.com/uploads/1/3/0/4/130483769/0b573b2b8.pdf
    • http://iledetanhai.com/uploads/1/3/0/6/130621385/7f24c215.pdf
    • http://5azdic.salon225.com/uploads/1/3/0/7/130738755/130738755.html#select+the+correct+sequence+of+events+of+the+cardiac+cycle

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034a3.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34A3 16036 bytes
font_01_sfnt_off00004bbd.bin
d8c5d65ff89ca9c635c8398110b8d380f66045699051a287f39cbd1d4a3dd6c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBD 8160 bytes

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