Malicious PDF — malware analysis report

Static analysis result for SHA-256 1631a89fc035953e…

MALICIOUS

PDF

35.7 KB Authoring application: SWFTools
MD5: cf9104597b4e4bbc692380e2f674c29e SHA-1: 8edc4241ed1b77a592a3f4fac7711314bc000477 SHA-256: 1631a89fc035953e2ebc4b48d90de06867ef0b8f71485a8de5499b5768ceb8d5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for a fake job opportunity at the British Museum, which is a common social engineering tactic. It embeds numerous links to external PDF files, indicating a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent, likely to deliver a phishing or malware payload.

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 https://vetujanali.weebly.com/uploads/1/3/0/4/130435514/e6b4f8cbd9.pdf
    • http://tikokani.seo-globus.ru/uploads/2020/01/27/6789870.pdf
    • http://dimattiadesigns.com/uploads/1/3/0/2/130291371/jusuraridi_vowal.pdf
    • http://taurusbulldesigns.com/uploads/1/3/0/5/130545429/3960733.pdf
    • http://asphaltisland.com/uploads/1/3/0/5/130588998/2181621.pdf
    • http://lawebared.uborka-kvartir-v-moskve.pro/uploads/2020/01/28/b0a12af0ba5.pdf
    • https://tovozowi.weebly.com/uploads/1/3/0/4/130476390/7995516.pdf
    • http://ne-surgerycenter.net/uploads/1/3/0/3/130313091/130313091.html#british+museum+tour+guide+job

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001130.bin
16bfc22cdafa73c2591f42f9fed7d1f9f72fa3591de1e89430308d90dcde3676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1130 7992 bytes

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