Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5af554c9767048…

MALICIOUS

PDF

34.9 KB Created: 2020-04-06 13:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 22905483dbb0fdbde0fc8c8bd01c89a4 SHA-1: 294dd308dd1e6971f0e72a43336d6ecc9ea5aa68 SHA-256: 4d5af554c9767048495d29d3548b29be8ce269cb6a7dab85956dcca02e6d5ccd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO abuse. The ML classifier strongly flagged this PDF as malicious. The document body mentions 'Kenneth w hagin books pdf', suggesting a lure to potentially pirated or misleading content. The primary attack pattern involves directing users to a network of SEO-optimized PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://petalsandperksfrankfort.com/uploads/1/3/0/5/130551764/130551764.html#kenneth+w+hagin+books+pdf
    • http://traceelements.design/uploads/1/3/0/3/130379389/wumuvivapopa_girivetezijapew_dafuv.pdf
    • http://burnellinfinitymath.com/uploads/1/3/0/5/130543418/ronuzixixumizusiga.pdf
    • http://oasis-on-the-hill.com/uploads/1/3/1/3/131380999/fuxetesuju.pdf
    • http://collaborativestyle.net/uploads/1/3/0/6/130621700/pijelokoluwowegopij.pdf
    • http://daddycraigo.com/uploads/1/3/0/3/130313390/beduviguso_bikunusim_nileron.pdf
    • http://danteboutique.com/uploads/1/3/0/4/130475989/cf852172e584.pdf
    • http://hairlineflo.nl/uploads/1/3/0/8/130813524/biwelodonis_voledimefap.pdf
    • http://fuckdonalddrumpf.com/uploads/1/3/0/6/130620669/figumo.pdf
    • http://dmusicbeats.com/uploads/1/3/0/7/130739949/3267629.pdf
    • http://davidalexanderrodriguez.com/uploads/1/3/1/0/131070561/2853737.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_off00005dda.bin
3f31d178e3ef83328953b480b198e692334250e52265c80c7cfcdab5f7210a69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDA 8196 bytes

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