Malicious PDF — malware analysis report

Static analysis result for SHA-256 10546860c30c9a01…

MALICIOUS

PDF

44.2 KB Created: 2020-10-28 20:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 59fef2b3a2e5a2f4d15ac1f413ac1758 SHA-1: ecceb6c8b58fa536effa354c6284e832244df5d1 SHA-256: 10546860c30c9a015a7828af36e69f5d5fbea799620e31989cbbceea193ab54b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.cc/123?keyword=tree+diagram+questions+english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372355/normal_5f98a24a95660.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/f37bc620.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/cdf78e0a.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/lemerafil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_5f93569a3be46.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/bd2ef7.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/719390.pdfIn PDF document text
    • https://pozitolize.weebly.com/uploads/1/3/4/3/134330731/viwubotev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5f8f5e931f6d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f88a28d8c38f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383801/normal_5f9665fa751cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_5f93533e94931.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/9973104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8e26fa01078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f89737124c88.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/jotizifime/xetabokimabibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f628ac-c1a2-44fc-8e2f-16e065835ca8/lotowamiremuxolov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a1f46e-0d91-40cf-b5f5-490c10406a88/94147393563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eee880b-e273-41a6-9e0e-1f9b666363b7/41730833020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9660ec00-02de-4c6f-9509-26a8f3e6b94b/zinevaxejuvoresog.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/alarm_check_valve_reliable.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/4058053281.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/lesson_plan_in_english_grade_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cedae12-2906-4c54-9179-67539ee00dab/61693430965.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_off00006e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E15 5312 bytes
SHA-256: fe436a94a6c35565312cf502d7dea00780d982bb854028b79a469c0a0e612cdc
font_01_sfnt_off00007feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEB 10244 bytes
SHA-256: 6cf8a44e0396544b2f030d256dc6449aef97a81e5698ce84ae7db976eef648fb

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