Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7230a9e5da0487…

MALICIOUS

PDF

46.1 KB Authoring application: Pdftk
MD5: c312c4fa70616d9bc3d14c69bbcb055e SHA-1: 1dc5fcb1a28cfec774cecf35aec444d01802be0a SHA-256: df7230a9e5da0487f1a2df29d39d888d997af4c4786989008d0a65ced42848da
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, characteristic of a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body, though partially corrupted, contains references to these URLs, reinforcing the link farm attack pattern.

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://nissajackman.org/uploads/1/3/0/2/130274378/252492.pdf
    • http://stngr.com/uploads/1/3/0/5/130590710/rasegunone_xodarusuxakox_vovoza_vafusorokodiz.pdf
    • http://sonyakrakoff.com/uploads/1/3/0/2/130291491/zejojefif.pdf
    • http://sortiq.com/uploads/1/3/0/4/130483906/difarogebojusiv-kinajod-pofej.pdf
    • http://myflorapops.com/uploads/1/3/0/6/130620320/gesoli-pepevevasenufok-tisikironul-tubixana.pdf
    • http://tepapo.womens-news.ru/uploads/2020/01/28/rufigobuwig.pdf
    • http://structureinsurancegroup.com/uploads/1/3/0/5/130588307/dcfcd81a.pdf
    • http://rmackson.com/uploads/1/3/0/5/130545565/velonot_tolamib.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/6/130620384/130620384.html#hamburger+template+for+paragraph+writing

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001200.bin
6cbe16626ff160e38ef00a5c400fb55c8bb5364edfdef982c71e21b793dfc17c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1200 8376 bytes
font_01_sfnt_off00006e5b.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5B 16036 bytes

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