Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e93ccba987ca752…

MALICIOUS

PDF

45.7 KB Created: 2020-08-14 21:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 772fe0d677cee771a8f7b38f109b71d2 SHA-1: d0f669e77f4d98bf466895ed3ef3f28ff80d0a41 SHA-256: 8e93ccba987ca752508ee5cc247d899c76b548f88888dab07aaf34d0fd8e6632
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a tactic to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=enterobacterias+coliformes+y+no+coliformes.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/pify?keyword=enterobacterias+coliformes+y+no+coliformes
    • http://bevoxuwe.abundance-endeavors.com/uploads/1/3/1/3/131381078/8359b966.pdf
    • http://files.coquelicothandmade.com/uploads/1/3/0/9/130968984/55250316736c6.pdf
    • http://files.writeworkstutoring.com/uploads/1/3/0/7/130739831/2180529.pdf
    • http://files.serban.com/uploads/1/3/1/6/131606435/xosofefasiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/durumivakuzazube.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/2006161919.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/72992334049.pdf
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/gowiw.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/lutakofobiranovowas.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/dark_eldar_5th_edition_codex.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/jibumedar.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/paradiso_perduto_john_milton.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/48507126307.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/31519373572.pdf
    • https://cdn.shopify.com/s/files/1/0432/7922/0891/files/gotovexumanugesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/a_structured_programming_approach_using_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/pelogenazeri.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007207.bin
9ffdaf0945d3971eb032f9d44f83c6631a37fb52e6851f8e25e25c28a4b36018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7207 5224 bytes
font_01_sfnt_off000083be.bin
4e639701e898483378cfbbad0299c75d8a0bb76943ee33538cb3dda43f778127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83BE 11156 bytes

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