Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a428c24eb1bbec7…

MALICIOUS

PDF

37.0 KB Authoring application: OpenOffice.org
MD5: 7a240360c9804cf58a841ecaa6a314a2 SHA-1: 53ab79eb7e97f7b22b66680923c4b671af766419 SHA-256: 0a428c24eb1bbec7cf18c47daab6e7781efa03061818beb1efe5c5fb64d6bd1a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common tactic for SEO spam or phishing campaigns. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. While no scripts were explicitly extracted, the structure and embedded URLs strongly suggest a malicious document designed to redirect users to potentially harmful content.

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://www.saramillett.com/uploads/1/3/0/6/130603976/8542383.pdf
    • http://peacesupportfund.org/uploads/1/3/0/5/130590521/c3b174.pdf
    • http://trailofhumanity.com/uploads/1/3/0/2/130272275/c58d953341.pdf
    • http://sistersofsolace.org/uploads/1/3/0/6/130639591/2f2e1e1569d9f4d.pdf
    • http://dollartank.net/uploads/1/3/0/6/130620888/vopavagu.pdf
    • http://www.concretetesting.org/uploads/1/3/0/2/130272396/6984983.pdf
    • http://hostmaster.evolutionize.co.uk/uploads/1/3/0/8/130873872/3c0f1.pdf
    • http://appmakerinc.com/uploads/1/3/0/8/130874570/xerit-pafiganun-nokugataxid.pdf
    • http://bassimasonry.ca/uploads/1/3/0/4/130488969/5524927.pdf
    • http://moonlight.gffgrow.org/uploads/1/3/0/2/130272247/4381426.pdf
    • http://montebellonotarypublic.com/uploads/1/3/0/5/130588687/menojebi.pdf
    • http://monolithcomputing.com/uploads/1/3/0/2/130273581/luxijivi.pdf
    • http://foreverflashy.com/uploads/1/3/0/6/130604441/saxiresenon-xubirudemamixok-gutowapezubile.pdf
    • http://eurekasinc.com/uploads/1/3/0/6/130622002/3713894.pdf
    • http://qll2ux.bdgct.com/uploads/1/3/0/5/130590739/130590739.html#osce+station+cranial+nerve+exam
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cad.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAD 2600 bytes
font_01_sfnt_off00003810.bin
c3deb7d875f3a1c55d08831245d52f6fb7042db28ff8d23cb3685e2e5f71e6d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3810 7396 bytes

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