Malicious PDF — malware analysis report

Static analysis result for SHA-256 094121fc5a76182c…

MALICIOUS

PDF

38.2 KB Authoring application: Karbon
MD5: 3be7db51cd8d660d02f3376f5ba76c78 SHA-1: 48690a3bd66cec24751b0edee05fc9cc0cf38631 SHA-256: 094121fc5a76182cdcc5bd028465bc75cb683a25939a8684e9e7d9c0fe99a41e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, also contains several of these URLs, suggesting a link farm or redirection mechanism. This pattern is commonly used to distribute malicious content or conduct phishing attacks.

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://vil.1000bitcoinhomepage.com/uploads/2020/01/27/b0a3a162e5564.pdf
    • https://kitowafarok.weebly.com/uploads/1/3/0/3/130379386/5205756.pdf
    • https://xanosumoxelavaj.weebly.com/uploads/1/3/0/5/130539034/xanakegodelex-punefo-donig-nedufi.pdf
    • http://rejaj.pleer.org/uploads/2020/01/27/wawasaperasololaniga.pdf
    • http://weri.mimosaweb.com/uploads/2020/01/28/xuwebut.pdf
    • http://garoruju.bosh.moscow/uploads/2020/01/27/7284883.pdf
    • http://gifid.kropanev.online/uploads/2020/01/28/rixewoxelutir-vijipej-wotogaz.pdf
    • http://multistreams.com/uploads/1/3/0/4/130483582/130483582.html#john+deere+bc1600+owners+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001172.bin
dacc1bb67f3215ea3108ef319f886cf875f28d1b00dc48595e168793722f50a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1172 7992 bytes

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