Malicious PDF — malware analysis report

Static analysis result for SHA-256 740b42be93aeec42…

MALICIOUS

PDF

47.8 KB Authoring application: PDFBox
MD5: d44d0678883756923cace8bb56829171 SHA-1: ccc6814d59a268146682cdd8f9312102e0a4dc3f SHA-256: 740b42be93aeec42b74d0a2b6c38bf76bfa956357387c0d8397d725681a3ac8f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall, indicating a phishing or redirection-based attack. The ML classifier also strongly flagged this PDF as malicious.

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://newlifeeastla.com/uploads/1/3/0/6/130604939/tukuno_gozega.pdf
    • http://coreview.us/uploads/1/3/0/5/130544385/rerobezinofebejosubo.pdf
    • http://bocaizixun.f18.ebkf.org/uploads/1/3/0/5/130590391/144a2bdcbfc.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/4/130476502/30c9960.pdf
    • http://jessemontgomerytattoos.com/uploads/1/3/0/2/130289581/2659284.pdf
    • http://thewaybrea.com/uploads/1/3/0/6/130639275/5601628.pdf
    • http://lapbandlosangeles.net/uploads/1/3/0/3/130323612/kovemaletexof.pdf
    • http://theheroinesclub.com/uploads/1/3/0/7/130739878/ce910.pdf
    • http://www.totcentsblog.com/uploads/1/3/0/2/130289799/7387938.pdf
    • http://thecloudmen.com/uploads/1/3/0/6/130639294/risinutozo.pdf
    • http://lfsrm.net/uploads/1/3/0/5/130589168/pilow.pdf
    • http://detailinggreensboro.com/uploads/1/3/0/6/130639947/gizatewomimakos.pdf
    • http://parkourcamp.net/uploads/1/3/0/6/130620510/8fd00.pdf
    • http://funeralderangements.com/uploads/1/3/0/8/130814229/6404980.pdf
    • http://beaconhomesandinvestments.com/uploads/1/3/0/7/130739489/sosejagusunaju.pdf
    • http://starbucksfs.net/uploads/1/3/0/5/130588999/pemiwawoka.pdf
    • http://partyblitzindiana.com/uploads/1/3/0/3/130323159/depejir_fadovuse.pdf
    • http://theerasak.com/uploads/1/3/0/4/130436519/repedelizetaw_wowafef.pdf
    • http://aceitesdelatierra.com/uploads/1/3/0/5/130539756/130539756.html#ich+guidelines+cleaning+method+validation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eaa.bin
f4d1bd4b1f7170b5ddab3289e18f04830a4d76d30e67ecb69b760a5635add6b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 7632 bytes

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