Malicious PDF — malware analysis report

Static analysis result for SHA-256 7395ac6ce46c94a3…

MALICIOUS

PDF

84.5 KB Created: 2021-03-22 00:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 01e1be513a7d392e139712de82de3b23 SHA-1: b9d8e332ad9224e01d6248873187e2f2057eaa55 SHA-256: 7395ac6ce46c94a3e416ee1a03c356c893a36c8ed2b37fb468b8328b9dfb1b6b
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to manipulate search engine results or distribute further malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=basic+concept+of+political+science+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374022/normal_5ff20c2477b63.pdfIn PDF document text
    • http://radogomi.mygamesonline.org/44133884086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393521/normal_602791eade37a.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/meade_infinity_70_telescope_setup.pdfIn PDF document text
    • http://jarokixepoweso.mypressonline.com/33925926871.pdfIn PDF document text
    • http://bitiwiz.medianewsonline.com/beverly_marsh_sewer_scene_excerpt.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/clear_and_present_danger_symbolic_speech.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475875/normal_604120a849daa.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://dc6b22d1-fd3c-476a-b8f1-b0505981f591.filesusr.com/ugd/ab5adf_4cc593ed457c4834bfbd128e09ab97a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8cc020b-036f-4963-adaf-c3c20c4104a1/36297517845.pdfIn PDF document text
    • http://viniwowosur.onlinewebshop.net/banezatos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f1fc196-8966-4a10-bba4-8c2eb21ca465/57262602915.pdfIn PDF document text
    • https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_4975a866d6ae4afa89a5717e1f3fc519.pdf?index=trueIn PDF document text
    • https://804b95bc-9ca4-448d-a094-5a8e1ff69a26.filesusr.com/ugd/99d1da_dc315bf5d5d647f78f9246a94ddb13c5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d9d145-aa4a-4778-b480-31b9647aeac9/dasijavukuketufekiromux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff84ca7-84bc-467a-8451-9fc43d8edeb6/20213345724.pdfIn PDF document text
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_522d304bd94c4b02b894784be6ed7832.pdf?index=trueIn PDF document text
    • https://acaa17bf-cf2e-4132-a9e9-810271eb8bc4.filesusr.com/ugd/ab5b4c_672efcfb11694e8da73d1d3bf7aedef5.pdf?index=trueIn PDF document text
    • https://bcbc83ff-a82b-4234-bf1d-c69e8cae54d5.filesusr.com/ugd/057c82_28c76425320c46879c6fb6dd819d75c5.pdf?index=trueIn PDF document text
    • http://mekasesajiw.onlinewebshop.net/shatter_me_meaning_in_english.pdfIn PDF document text
    • https://c216880a-03a2-4774-ab7e-121c93799e8f.filesusr.com/ugd/b5aed9_68a9b413bc05483ba8ec1b78fce0ff88.pdf?index=trueIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_fc0b6a7a4fd048f9a297b9b503f46c1c.pdf?index=trueIn PDF document text
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_ea67ea71ee5e40ceb8f4b28aaa4bd3d2.pdf?index=trueIn 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_off000100a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A9 4888 bytes
SHA-256: e27b72f92ad9f68d9da345cc1c7294fc6cb3ab7fc3d1beae2ddcd074e04fc840
font_01_sfnt_off00011149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11149 10860 bytes
SHA-256: befe8a9a1536a9f4b5271744dd731c3997b87218a2c56eb0067a030134eeb3dc
font_02_sfnt_off00013632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13632 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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