Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad8cc401a07e649…

MALICIOUS

PDF

40.2 KB Created: 2020-10-27 19:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0e12d75067593237cb86cb65a40fe204 SHA-1: 98569ba4fcb3a861082bc4efc4b53dec63259ecf SHA-256: 3ad8cc401a07e649a33f31c6468f3504629da1af9ae1a967a5fc1322535269fb
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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/123?keyword=fe%2528h2o%25296+3%252B+colour In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390074/normal_5f8f202fd1cd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380213/normal_5f8eb74ee1e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369928/normal_5f88aa9863123.pdfIn PDF document text
    • https://veforolafumokiv.weebly.com/uploads/1/3/4/3/134340642/megumewuwojovizemes.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/zapirasitipox_mekunepiravim.pdfIn PDF document text
    • https://tofejigijo.weebly.com/uploads/1/3/4/3/134312142/346598.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/8977654.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/25428116350.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/center_of_mass_momentum_impulse_and_collisions.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/jatefamezaxizup.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/ragiwutoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/geometrical_optics_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/60204989752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e91a18-35cf-46d0-9a17-5d7a13e05a67/budufevavenigexuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6932c362-d0e9-4800-b21b-2f8722c9804d/72692602358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6007703a-63bb-468a-bcf1-4a0b8d8a8500/zunirewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fca4e76-bc38-4327-9723-2a41a0bc2530/wetifasumuwusu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 5056 bytes
SHA-256: a890a7dcf6b18592eeac8117a7bfe8794c69bc371f68b6d153b4c02002cba2dd
font_01_sfnt_off00006fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD9 10564 bytes
SHA-256: 1393778f6a58c9767ce68ca74c4f6935b914f3ffff7a96a7cb4e22e3c9f3f48f

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