Malicious PDF — malware analysis report

Static analysis result for SHA-256 6680efa6e32ae62d…

MALICIOUS

PDF

41.3 KB Authoring application: Solid Converter PDF
MD5: a1bf5266785ebcd1117ef3f6fa680a80 SHA-1: 5b9ac3d21fca6dd002a4672f49c5a9fbb8357c23 SHA-256: 6680efa6e32ae62d7b6ee092bebf5cff16c90e248604b00e8c72c4339b04d6ee
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, which is a common technique for distributing malware or conducting phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the link farm suggests the document is designed to redirect users to malicious sites, potentially for further exploitation or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.Dropper.Agent-9548165-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9548165-0
  • 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://cloggingworkshops.info/uploads/1/3/0/4/130483953/57de7f15.pdf
    • http://brittany-paris.net/uploads/1/3/0/4/130490338/c2e195.pdf
    • http://sanfrancisco-interactivehypnotherapy.com/uploads/1/3/0/3/130313836/futubaxa-tubezepa-munigoterudaxi.pdf
    • http://xikemas.klubok-modno.ru/uploads/2020/01/29/d69f2.pdf
    • http://tripandsip.org/uploads/1/3/0/4/130483753/pikojowan.pdf
    • http://americanbeachranking.com/uploads/1/3/0/4/130435503/7925077.pdf
    • http://doctorfieser.com/uploads/1/3/0/4/130476120/piselemonozilad_zokuzovexoxo.pdf
    • http://neroliltd.com/uploads/1/3/0/4/130436399/889348a.pdf
    • http://commongroundsphilly.com/uploads/1/3/0/2/130271038/2209144.pdf
    • https://bigujoxamesafeg.weebly.com/uploads/1/3/0/5/130588617/6b5f28a1fcb11.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/2/130272886/130272886.html#mandatory+arbitration+california+statute
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012dc.bin
8ff7821d4be666735d7f1b838c9ee33fd417eccc7b58771fcbaab05d420fa6d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC 8596 bytes
font_01_sfnt_off00006624.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6624 2652 bytes

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