Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c35408572da96c4…

MALICIOUS

PDF

35.6 KB Created: 2020-11-06 19:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 443e82a7ae6b3e63d0100dc1a175f9db SHA-1: f65109026ec59ee68ae87d138cd3dbc621a87ea0 SHA-256: 9c35408572da96c46ebaf29265d405e3717a82d5ad4416905fd7d3aef06c16d2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=camp+chef+ultimate+turkey+roaster+recipes PDF link annotation
    • https://sewuvemap.weebly.com/uploads/1/3/4/3/134377394/a128118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_5fa022c245f8f.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/e98d0b8113c68.pdfIn PDF document text
    • https://josadezabo.weebly.com/uploads/1/3/4/4/134490641/porufalen_likejidukax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8152552-f1fe-42d9-9612-acd86c5d83a3/mifav.pdfIn PDF document text
    • https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a98b8b8-e0da-4db5-a69c-7f3d86673c45/wunerozibep.pdfIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/weworabaduden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c85870e7-d753-468e-a784-6e4d4bc220c5/algebra_1_structure_and_method_answer_key.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.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_off00004e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E36 5328 bytes
SHA-256: 8ef8c21b6d29acd412fc8e682e313a3989fb7a3740966b398febcb67c0a6f246
font_01_sfnt_off0000602f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 9808 bytes
SHA-256: d8153fe8e5ea621ec35818c7b0b5a59895b174900094c8020c5e4fb43710f19b

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