Malicious PDF — malware analysis report

Static analysis result for SHA-256 b11d7e47421b2f6f…

MALICIOUS

PDF

34.4 KB Authoring application: Pdftk
MD5: 1c46ff746f6fb4f5d09587b8b2583b74 SHA-1: 4d4a4da972e964a5a0c9d0fcfb9b982fb349a7b9 SHA-256: b11d7e47421b2f6fc6f7ac203375de7c3849151ca9f0d6d53980ff9a82d57c36
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains and are likely part of a link farm designed to attract traffic or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing or traffic redirection. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to lead the user to a malicious PDF.

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://michaelgierl.com/uploads/1/3/0/6/130620524/burulirataliduzika.pdf
    • http://mystrugglemyvictory.com/uploads/1/3/0/2/130289803/c6db46b125c.pdf
    • http://premierbeachfl.com/uploads/1/3/0/2/130289540/xijekigatuxo.pdf
    • http://riseroofer.com/uploads/1/3/0/2/130289540/rusepub.pdf
    • http://alexiscoutu.com/uploads/1/3/0/2/130272101/415f45530c31c.pdf
    • http://kadok.jen-sovety.info/uploads/2020/01/28/bijevufage-kilafepe-dijuzu.pdf
    • https://konedotofijew.weebly.com/uploads/1/3/0/4/130476262/wekomozed.pdf
    • https://xuwugemor.weebly.com/uploads/1/3/0/5/130539113/sebixojokevudijekom.pdf
    • http://basketball-skills-training.com/uploads/1/3/0/5/130548070/eae1c.pdf
    • http://michaudwellness.com/uploads/1/3/0/4/130435679/130435679.html#sisters+of+battle%3A+the+omnibus

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e5.bin
85f4156637e99739e29cd8b91b5f6cc9fe7e0b830cc22128263cb7a799037fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5 7900 bytes

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