Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc7de68d5aadf00…

MALICIOUS

PDF

40.6 KB Authoring application: QPDF
MD5: e7de22e9ac868a4c5643d89f54e05a88 SHA-1: fe2df6a47962dfd2350d713cac207ad0e0de3fa4 SHA-256: 5dc7de68d5aadf002c03cd3c5b44dfa74b947b075857842e21c1e603f1f32bfb
160 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing. The embedded URLs are likely used to host or redirect to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nomoneynohoney.online/uploads/1/3/0/4/130435596/b2fd86a8.pdf
    • http://solfeggiohypnosis.com/uploads/1/3/0/5/130588651/3788262.pdf
    • http://laurenvanmullem.com/uploads/1/3/0/6/130621446/tubivirofeguwez.pdf
    • http://nikkiheatsales.net/uploads/1/3/0/4/130483986/2497696.pdf
    • http://rescuekitty.net/uploads/1/3/0/6/130604147/suzaganuned_tididokazufuwa_wasorelid_nabinositakivok.pdf
    • http://mykittykandy.com/uploads/1/3/0/5/130589217/8b42429f.pdf
    • http://rebeccalaplacaattia.com/uploads/1/3/0/5/130547613/130547613.html#gta+vice+city+jcheater+apk+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001107.bin
d9978cabddc199718782914d75301e66cb4314215cb48b8b5b6e3c3f4aa459c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1107 8124 bytes

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