Malicious PDF — malware analysis report

Static analysis result for SHA-256 facc9e85c62db150…

MALICIOUS

PDF

38.3 KB Authoring application: Mobipocket Creator
MD5: 4674210e0d19adad4f544d9e609900b1 SHA-1: 3ef466397a04e54165324ec647f894dcdfbfb161 SHA-256: facc9e85c62db150dc85555a334c903f71142ebee5114fbe2f29620bd647de68
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO manipulation attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The document body contains a mix of obfuscated text and the same list of external URLs, reinforcing the link farm attack pattern.

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://catagorica.com/uploads/1/3/0/2/130272350/0b9ffdf.pdf
    • http://off2grandmashouse.com/uploads/1/3/0/5/130590312/bisaparoporow.pdf
    • http://jlu-boston.org/uploads/1/3/0/3/130323794/ff8749c.pdf
    • http://subarucrosstrek.info/uploads/1/3/0/7/130775258/aa09c95e3fe6dc2.pdf
    • http://shine2bright.com/uploads/1/3/0/2/130287527/wivuma-xusuvapedigo.pdf
    • http://ce-seniors.com/uploads/1/3/0/6/130604815/2f8f98f9d103a02.pdf
    • http://timmahekdds.com/uploads/1/3/0/5/130540714/rusujofeguwegowiv.pdf
    • http://rattlesnakerally.weebly.com/uploads/1/3/0/5/130539130/mototilewexi.pdf
    • http://fen.f90.ru/uploads/2020/01/29/webobavubexexiwas.pdf
    • http://miller-ssg.com/uploads/1/3/0/4/130476192/kelif.pdf
    • http://unityphp.com/uploads/1/3/0/6/130604848/8967787.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/3/130379583/130379583.html#wrist+problems+after+carpal+tunnel+surgery

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128d.bin
ad46fa51875b00df3ce8648d6a8a5328d82f5a23a5a8cd486aa88fe0ca517af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128D 7968 bytes

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