Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e822fadb41bcf3…

MALICIOUS

PDF

32.8 KB Authoring application: Nitro PDF
MD5: a1aa2922228b837a6395621e98335e00 SHA-1: 4aa49fa96333dd0ea722349572a6e17f98e2bf97 SHA-256: e2e822fadb41bcf3d7b461a5e6e900ab3c13e54fd1da13caacc1a79d008d213b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains, indicative of a link farm. This is consistent with phishing or redirection tactics to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification.

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://kent-archer.com/uploads/1/3/0/6/130605292/bofojuri_tesomififapis.pdf
    • http://excelappdevelopment.com/uploads/1/3/0/7/130775268/9cec63fb.pdf
    • http://diversified-resources.org/uploads/1/3/0/7/130738614/8007795.pdf
    • http://erinphotography.co.uk/uploads/1/3/0/6/130639068/raguwevi.pdf
    • http://teamtodun.com/uploads/1/3/0/3/130379445/9958982.pdf
    • http://bloombodycare.com/uploads/1/3/0/7/130739398/vurub.pdf
    • http://materialsdesign.net/uploads/1/3/0/2/130287875/d0101b9.pdf
    • http://fucking-anonymous.com/uploads/1/3/0/7/130740249/f4314f9dd1a8cff.pdf
    • http://shonee.shop/uploads/1/3/0/4/130483216/69077baf65311.pdf
    • http://chichomeinterior.com/uploads/1/3/0/5/130588389/5302910.pdf
    • http://distancelearningtoday.net/uploads/1/3/0/3/130379386/130379386.html#akai+professional+mpd218+controlador+pad

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002895.bin
734792a5bde62dc980aa49649ca0663e378f6b62cd4d32e47e073494095638dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2895 8376 bytes

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