Malicious PDF — malware analysis report

Static analysis result for SHA-256 682a93b235e34996…

MALICIOUS

PDF

36.3 KB Authoring application: PDFedit
MD5: 52e7569f498d4b5e06e308c625659869 SHA-1: 36b82c139768dc44b9bd9aab39da0c4dfc17127c SHA-256: 682a93b235e3499602851abab390edec39338f8f30c0334346a228ea160a3fb0
192 Risk Score

Malware Insights

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

The PDF contains a lure related to corrupted backup files, aiming to trick users into clicking embedded links. It features a large number of external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://yamayogacollective.com/uploads/1/3/0/4/130483847/c6522f71.pdf
    • http://bikefishski.com/uploads/1/3/0/2/130271060/48cd4f0a7736ba.pdf
    • http://rscrystalmedicine.com/uploads/1/3/0/3/130313144/1715814.pdf
    • http://lanzarote-immobilien.info/uploads/1/3/0/2/130289774/wizolobeto.pdf
    • http://wez.sparepartsjumberca.com/uploads/2020/01/27/2168b3f49d1.pdf
    • http://reklam5.net/uploads/1/3/0/4/130476652/d0b5cfd67.pdf
    • http://aswatrade.com/uploads/1/3/0/4/130476712/puvefexixi.pdf
    • http://brownmediadesigns.com/uploads/1/3/0/6/130620551/tofudujetebivew_bujop_gesuro.pdf
    • http://nightbeachpearls.com/uploads/1/3/0/5/130540926/febatobe.pdf
    • http://battlecreekendo.com/uploads/1/3/0/2/130288301/130288301.html#acronis+true+image+backup+is+corrupted

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
3cef7daf5fb519490b26e03efe82f967cdc079ed7f175b0db7e997973c92c58a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 7512 bytes

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