Malicious PDF — malware analysis report

Static analysis result for SHA-256 51c5b99801c0b560…

MALICIOUS

PDF

37.6 KB Authoring application: Mobipocket Creator
MD5: 6b34fcf4a68072fbbd28d51cbf5d333f SHA-1: eb4d2d2882ebe2496dea26e078d11fee65b3b33a SHA-256: 51c5b99801c0b56042f912e2d06ec182e6d794b7beb439557f5a472a58e01fc2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of embedded external links, characteristic of a link farm or SEO manipulation tactic. The document body, though partially corrupted, contains references to 'Report administrator role in cognos', suggesting a potential lure or pretext for the malicious links. The primary attack pattern involves leveraging these numerous external links to redirect users to potentially harmful content.

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://soulspeakmarketing.com/uploads/1/3/0/5/130551339/f9abeca096.pdf
    • http://nftesouthflteachers.com/uploads/1/3/0/4/130488175/5b22685.pdf
    • http://blkafrodite.space/uploads/1/3/0/3/130323187/5399913.pdf
    • http://poshgroom.com/uploads/1/3/0/2/130271072/992d205a2c658d.pdf
    • http://arctictreasures.shop/uploads/1/3/0/4/130483806/43c557b5831d.pdf
    • http://theacneandskincareclinic.com/uploads/1/3/0/7/130776219/geguropitalo.pdf
    • http://pugetsoundbirthingfromwithin.com/uploads/1/3/0/7/130775198/fakilewomojofan-witezijezosezi.pdf
    • http://thehnossaproject.com/uploads/1/3/0/7/130775374/130775374.html#report+administrator+role+in+cognos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000117a.bin
c41b6fccac6c2f0b6c7e934ae6d783f7f4826b8e779dfe51875f3fe153312b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117A 7952 bytes

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