Malicious PDF — malware analysis report

Static analysis result for SHA-256 14635b9c0093e4e0…

MALICIOUS

PDF

45.4 KB Created: 2020-05-25 13:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dd342a7d672753399287c627d246e0d SHA-1: b0ce2af405620d986690fdd4cd0dae6ffe68781d SHA-256: 14635b9c0093e4e0368dc4fa5ae3161e49a3badb15fd0c9dbea89085489a3413
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document is identified as malicious by an ML classifier and contains a large number of external links, characteristic of a link farm or SEO spam. The document body text, though obfuscated, contains a URL that appears to be a lure for 'Everquest rogue leveling guide' information. The primary attack pattern involves tricking users into clicking these links, potentially leading them to malicious content or further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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://time2bondtravel.voyagerwebsites.com/uploads/1/3/0/7/130739492/130739492.html#everquest+rogue+leveling+guide
    • http://domoniquemhollins.com/uploads/1/3/1/4/131452952/d1aa9e301a96c.pdf
    • http://thoughtcoalitionhq.com/uploads/1/3/1/4/131405976/7676795.pdf
    • http://winandchocolate.com/uploads/1/3/0/5/130589337/8017737.pdf
    • http://cantalupo.com/uploads/1/3/0/7/130776037/jodowuxidugavun.pdf
    • http://easyandhealthier.com/uploads/1/3/1/8/131871493/8249029.pdf
    • http://marplebeertraders.com/uploads/1/3/1/4/131453496/bededelevazawam_marikovuxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008729.bin
f1b2106fee554ceee3bdf2b922f3a5ef7448b9d079712dc48a9e8946a7729f1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8729 10412 bytes

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