Malicious PDF — malware analysis report

Static analysis result for SHA-256 836e6cc18892e551…

MALICIOUS

PDF

36.6 KB Created: 2020-04-21 11:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0f59fb1be5db20daed7434d61e562558 SHA-1: 4a3bf108ca9a85748ce4ec958aef680d367980fa SHA-256: 836e6cc18892e5514c247069409863ac6ef7add94411ee11992cb206bd902253
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, identified as a link farm, likely intended to drive traffic to various websites. The document body mentions 'Templates ableton live 9', suggesting a lure to attract users interested in music production software. The ML classifier strongly indicates maliciousness, and the presence of multiple external URIs points towards a campaign to distribute malicious content or engage in SEO spam.

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://mindforyou.org/uploads/1/3/0/4/130488626/130488626.html#templates+ableton+live+9
    • http://allegianthealththerapy.com/uploads/1/3/0/8/130813790/5231051.pdf
    • http://glenhollowbeauty.com/uploads/1/3/0/4/130490036/xumawir.pdf
    • http://mywilshiremanning.com/uploads/1/3/0/5/130588757/8374a85.pdf
    • http://maidenmisfits.com/uploads/1/3/1/4/131454286/kunosum.pdf
    • http://groundappeal.co.uk/uploads/1/3/0/6/130620483/1863409.pdf
    • http://cacaliveyouth.org/uploads/1/3/0/5/130544790/zuxuladezi.pdf
    • http://sherryschaffer.com/uploads/1/3/0/8/130874086/7316735.pdf
    • http://terrifyinggrace.com/uploads/1/3/0/6/130639628/849979.pdf
    • http://forlenzaassociates.com/uploads/1/3/0/6/130621137/tazopeviwugisa-sekorijerulap-tanotova-nurufutibi.pdf
    • http://healthproyou.de/uploads/1/3/0/5/130540049/7449910.pdf
    • http://snapdo.org/uploads/1/3/0/6/130639775/4970310.pdf
    • http://acilocator.com/uploads/1/3/0/7/130740433/7a8930ecafcb.pdf
    • http://precisionvalleybaptistchurch.com/uploads/1/3/0/6/130604407/e0635b.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_off0000684f.bin
c787ae00e3c9d3f8d831ff49d4e98c0bc95c95fd3831579bb7ac8e110b9e2ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684F 7760 bytes

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