Malicious PDF — malware analysis report

Static analysis result for SHA-256 784aefccf02e24da…

MALICIOUS

PDF

41.8 KB Created: 2020-11-03 01:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 482622529a986409f5bb7ed1a3c1bdf1 SHA-1: 9bd721885a1a37e8b4830663cda58cd3bdd3e1fd SHA-256: 784aefccf02e24dab99dc9a4bb31cee512da579523e08409469691e14dd42ef3
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://cctraff.ru/strik?keyword=ash+2020+orlando In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9f84dd82792.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/nevazaxomuz.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/sevux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5f9eb530852a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5f8cb676afc6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386354/normal_5f8f04cacf3c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5f8ddde090e60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7383/0556/files/bufivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2012/5079/files/73578813745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/5200699646.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/18235433336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/7799/7981/files/sugar_chile_robinson_go_boy_go_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/6736/8106/files/ableton_live_10_manuale_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/5379/8319/files/chicago_cubs_2020_schedule_mlb.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6610 5176 bytes
SHA-256: 4ed8bb00be2d7e7620b5fce7c34486236c90fb6feea1b02105aaa9f4bb16feb7
font_01_sfnt_off000077a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A2 10328 bytes
SHA-256: 731baebed6953ca55824ce8056b6846b6da149c93f87289d0fc359e55886a7d1