Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a84078ec92eb99…

MALICIOUS

PDF

39.7 KB Authoring application: Adobe PDF Library 9.0
MD5: 753b6a869990d11fc22d32ee756a4804 SHA-1: 9b309a478d6a77d23250dd905c96928ae83069af SHA-256: 01a84078ec92eb9957758145387d3696f1a3b5747f1823b073a44f87afccf9de
152 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall and exhibits a critical heuristic for a PDF SEO link farm. The document body contains numerous embedded URLs pointing to external PDF files, suggesting a campaign to drive traffic to these sites. The ML classifier also strongly indicated maliciousness.

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://world-store-line.site/uploads/1/3/0/4/130488810/9538139.pdf
    • http://mowerok.com/uploads/1/3/0/5/130543538/pobiba-kigeb-welamolo-xodeselivukuxom.pdf
    • http://pinsights.net/uploads/1/3/0/4/130489123/9919c6994b12.pdf
    • http://aliveatfive.org/uploads/1/3/0/6/130604958/42bc712b5c1.pdf
    • http://alexploreonline.com/uploads/1/3/0/4/130489377/medabikusaxa.pdf
    • http://janiceandersonmusic.com/uploads/1/3/0/5/130588452/810e0e5c9c6.pdf
    • http://morganstermiteandpest.com/uploads/1/3/0/4/130483631/07599b0f31640.pdf
    • http://benkregel.com/uploads/1/3/0/2/130272524/130272524.html#irregular+menstrual+cycle+differential+diagnosis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115b.bin
ca03ffcf11cdb8c9ebaad5466bc7d7891742bbf51b1fcf420861e76168193f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115B 8072 bytes

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