Malicious PDF — malware analysis report

Static analysis result for SHA-256 c518f2880cc263df…

MALICIOUS

PDF

36.8 KB Created: 2020-03-24 19:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 93ab06ac3113afa2e4f82d9ae6893e8f SHA-1: d4bcdbf274627ab1cbb878fffccee8d91fc058f3 SHA-256: c518f2880cc263df12a78aed18a4246b2f72565f842643bd3449c6f39517a375
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF files, a technique commonly used for SEO spam or to redirect users to malicious content. The ClamAV detection 'Pdf.Dropper.Agent-8901495-0' further supports its malicious nature. No scripts were extracted from this sample, and the document body text is largely unreadable, making it difficult to determine a more specific attack pattern beyond link farming.

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.Dropper.Agent-8901495-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8901495-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://glicksandglamour.com/uploads/1/3/0/7/130776740/130776740.html#tecumseh+6hp+engine
    • http://pickleballstore.net/uploads/1/3/0/6/130604769/logezizujutu.pdf
    • http://yogawithcasey.org/uploads/1/3/0/6/130620633/8255421.pdf
    • http://www.628threads.com/uploads/1/3/0/8/130874136/kesofuxexadilu.pdf
    • http://michaelandamandawedding.com/uploads/1/3/0/2/130273846/30fe67.pdf
    • http://davejamesphillips.com/uploads/1/3/0/5/130544448/2187054.pdf
    • http://www.mindbody-solutions.net/uploads/1/3/0/6/130604313/wawazilal.pdf
    • http://clarksvillerealty.org/uploads/1/3/0/3/130379246/dazidubalejirez_kukibumedawoj.pdf
    • http://nativeroots-design.com/uploads/1/3/0/5/130589312/839131.pdf
    • http://juliancert.com/uploads/1/3/0/5/130590719/xokojaruvageru-mulozuzod-sexexipewolamax.pdf
    • http://jamesdesign.studio/uploads/1/3/0/6/130605125/f708fdd33ed1e.pdf
    • http://trservices.com.au/uploads/1/3/0/6/130621800/5d1c3173.pdf
    • http://www.relieftincture.com/uploads/1/3/0/5/130547812/6525833.pdf
    • http://thomassclarea.org/uploads/1/3/0/2/130289279/woxutejok_wikokoguvun_mukebisol_pifafajofez.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc6.bin
dad096b5b8b59f0f90fb04f92b63e522c2ce2477b1f2f64145e0f6a617f3b2e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC6 6688 bytes

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