Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bca057cf30d6d2…

MALICIOUS

PDF

41.4 KB Created: 2020-09-17 01:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce5f033675514dcd959f2b3dd79598c8 SHA-1: 64a420aae962d9faafacb0528e9e0b29a7e84ac1 SHA-256: f3bca057cf30d6d24f76a1854cde288ea3b1a14e34ddbaf495ceb07f8b7abb6b
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, masquerading as a vehicle manual, which redirect to a link farm of SEO-optimized PDF documents. The primary redirector link is `https://ttraff.link/wix?keyword=2004+pt+cruiser+manual`, and the link farm includes domains like `wekatoxit.kierlandpop.com` and `oldgoatlures.com`. This indicates a campaign to drive traffic to malicious or potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 https://ttraff.link/wix?keyword=2004+pt+cruiser+manual
    • http://wekatoxit.kierlandpop.com/uploads/1/3/1/4/131408229/dokimoji.pdf
    • http://files.oldgoatlures.com/uploads/1/3/0/9/130969003/c113adc.pdf
    • http://zexubata.fleenorfamilyadventure.com/uploads/1/3/1/4/131453501/xuponadarate.pdf
    • http://files.jamesbondbooks.co.uk/uploads/1/3/1/4/131453530/zesanujuweginuxobun.pdf
    • http://files.iphoneonestop.com/uploads/1/3/1/3/131380626/woselezesodaxe_sikejaxejojat_pobutivikoxa_mogesuwumo.pdf
    • http://files.peppahead.com/uploads/1/3/1/4/131453907/tudiferop-dikodewevelox-xedagim-kulanabasesi.pdf
    • https://2ee523f9-7a63-40a7-9563-845a32c6d754.filesusr.com/ugd/b1b3ad_a0d2149be8d84f3fa3b8849be8c10ca8.pdf?index=true
    • https://4cdf2317-3ed6-4b7d-95e2-785a95044b21.filesusr.com/ugd/0d018b_41ff9e2ed7314238936bbfe9545ec801.pdf?index=true
    • https://5ebba418-9f05-44de-b97b-e8f44e147fd2.filesusr.com/ugd/d2cc1f_ce395aa4b2c7477aaf84f895905db8f4.pdf?index=true
    • https://82c5911a-6352-424f-8ab7-c46649a6b6ce.filesusr.com/ugd/c450b2_c0b2f3e9a218444c8ad41321c0074930.pdf?index=true
    • https://b271ee95-a830-47ce-b829-9acfa44d48c9.filesusr.com/ugd/69695d_437f382da57f42bf97f17de33afd3121.pdf?index=true
    • https://a0214df4-66a8-493a-bf6b-a589106e92eb.filesusr.com/ugd/5f5755_b8e5e151bc8741bab8bd6f777da3af48.pdf?index=true
    • https://2b511df3-9262-4852-838c-3a35170fe1fd.filesusr.com/ugd/868b90_92d4c39220cc4b98b7d8c2b6823cdd17.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005723.bin
5f46488c6f01e7234b510183e3b4cc01e35e284b84e53895390231cb20084924		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5723 5116 bytes
font_01_sfnt_off00006866.bin
ac28e42c3803e1f3d8651caff749903ad1baed04d3b2009bde9094c8ce2fc2b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6866 10108 bytes
font_02_sfnt_off00008b0a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0A 4324 bytes

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