Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa9c216ff79792b…

MALICIOUS

PDF

47.3 KB Authoring application: PDFedit
MD5: 2ca5f8d2d855ef49ec13e5b7a9b2a9d5 SHA-1: 343013ef5c337f8fe1a5dd6b079e765af9246976 SHA-256: 6fa9c216ff79792b07f57e8add032073b1ce879956fd72e9822f60fe7d4eb2f5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links to external PDF files hosted on various domains, detected by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute additional malicious content. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall-7605656-0. No scripts were extracted, but the extensive link farm indicates a phishing or content distribution attempt.

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://monetki.website/uploads/1/3/0/5/130551559/4103562.pdf
    • http://mkh-mfg.com/uploads/1/3/0/6/130620669/343144.pdf
    • http://cheyenne-janas.com/uploads/1/3/0/3/130313786/1354238.pdf
    • http://shelleycorr.com/uploads/1/3/0/3/130313220/jovipiwikupelifatimi.pdf
    • http://nationalchristianhousingconference.org/uploads/1/3/0/6/130639365/pudedojoja.pdf
    • http://sosocialshirts.com/uploads/1/3/0/4/130436343/xadafido.pdf
    • http://invergowrie.org/uploads/1/3/0/6/130639552/0887918e.pdf
    • http://vulturepeaksilverbars.com/uploads/1/3/0/6/130604515/41ccc58.pdf
    • http://iqcu.biz/uploads/1/3/0/7/130739814/nexaxizuxevi-xivavape.pdf
    • http://placitasdemocratsandfriends.com/uploads/1/3/0/6/130605312/1f351d24a5d.pdf
    • http://riinabodyart.com/uploads/1/3/0/6/130620491/9ff692ff5f833e.pdf
    • http://miracleinabucket.com/uploads/1/3/0/7/130739082/130739082.html#anion+gap+aumentado+pdf
    • 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_off00001342.bin
533311d67814919a4dd0de8f3d237f885a365c67454d465a4cf501ae0e26fce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1342 10544 bytes
font_01_sfnt_off00007c6a.bin
95622e7e0a76c68c4a4a7add882b26e4f526c4e5af54fd46bfa120ea7472ac7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6A 3240 bytes

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