Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8589186848182a3…

MALICIOUS

PDF

45.2 KB Created: 2020-11-05 02:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3f8b465da2ae56c4647cc5a26b310869 SHA-1: 5363bba3facf90354549f9c4b476c563b9e835c5 SHA-256: c8589186848182a3eb823f11c7fc1be658079aa5bd55a799dfb93c2df784481a
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://ttraff.club/123?keyword=john+deere+990+service+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_5f9c834b962e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464730/normal_5fa3258fe1561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_5f99103b6d52b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f96072818431.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/google_sitemap_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gidubov.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/sama_veda_upakarma_sanskrit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3241a772-b5e4-45ca-bdb5-887f5f9fde6f/2700469523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/936bf867-7efb-45ba-a580-eacd75a61b8f/xowuvifudebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8f502a5-9d27-40d6-910b-358edec780ec/pulok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7167595-5aa6-41af-82e6-610885fd812b/another_word_for_controlling_and_bossy.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 5328 bytes
SHA-256: 816852045e492248391762b1f65809328909f0f9eefff8ff259effcfca1d2e36
font_01_sfnt_off0000765d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765D 10516 bytes
SHA-256: 87dadcc67aebb50b6ee278722b605da92d4727d3c455de6eaaf4336ca7f8fc56
font_02_sfnt_off00009a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4B 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71