Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ea93a74fe86e03…

MALICIOUS

PDF

37.5 KB Authoring application: ImageMagick
MD5: b9f03164fc4cd043c3f847e71cd5859e SHA-1: d56b3544c3a9b073e6c981030489041a4e1bcb6d SHA-256: 10ea93a74fe86e035c4269b368f2a3fa1a6a9853fa27795c22f4ebe7049f1cb0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or content distribution scheme. The ClamAV detection and ML classifier also indicate maliciousness, likely related to phishing or unwanted content distribution.

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.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://treetopreptile.com/uploads/1/3/0/5/130546543/kinewusavesoma.pdf
    • http://belairunitingchurch.org/uploads/1/3/0/5/130550696/sugiroralif.pdf
    • http://bottinnok.xyz/uploads/2020/01/28/nasekajifejat_zexofefugajokin_manugebe.pdf
    • http://meechieblessboostcreditllc.com/uploads/1/3/0/4/130476185/jutulutumaziwo.pdf
    • http://shermanenterprise.com/uploads/1/3/0/2/130271047/vadodotuzomo.pdf
    • https://regujigekizolez.weebly.com/uploads/1/3/0/6/130604582/pexenez-denabubu-fixilinewatiti.pdf
    • https://mepazamiw.weebly.com/uploads/1/3/0/2/130287862/448840.pdf
    • http://eastfirstgradedli.weebly.com/uploads/1/3/0/5/130588213/wudifekajabogazakek.pdf
    • https://manetuvalesok.weebly.com/uploads/1/3/0/4/130436250/wefiwosa.pdf
    • http://oscarsterte.com/uploads/1/3/0/3/130323996/doduzuto-nokafav.pdf
    • http://gitu.lumiprint.ru/uploads/2020/01/27/0ae43ab400a.pdf
    • http://nycraftworks.com/uploads/1/3/0/4/130476885/c689793a41.pdf
    • https://nipulubozubal.weebly.com/uploads/1/3/0/4/130477007/tapogaderot.pdf
    • http://a1412531xstreamtravel.xsideas.com/uploads/1/3/0/4/130489248/130489248.html#basic+evaluation+form+templates

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000136e.bin
b9ad192474290b4673d77dd36121d43fcc3f660fb906b9542fc68b1d9ae4045d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136E 7712 bytes

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