Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f602672f2850d2…

MALICIOUS

PDF

80.9 KB Created: 2021-03-22 02:37:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee78c4cc2292f1bf5efb2a975892a2bc SHA-1: 5e9648adf38a8a4b2d91afdf464b5cc189062b83 SHA-256: a1f602672f2850d2e3ccae7b58af0fa651210cb6ca8c91c1a64205ff4242a7bc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://pelibifir.ru/wix?keyword=cha+cha+job', which is likely part of a phishing or credential harvesting scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host multiple links on disposable domains, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=cha+cha+job PDF link annotation
    • https://s3.amazonaws.com/bifadiwuwileji/8497633385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405430/normal_6014679d6ddc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424637/normal_604505a8ca5b8.pdfIn PDF document text
    • http://vemafenuxaj.22web.org/bibuvuf.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/pdf_2005_honda_civic_owners_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415055/normal_6014216e44687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501046/normal_601f23a30b5a7.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/khgC9wy/game_sound_effects_library_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/mame_0.139_roms_pack_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/walevaxumunupugenu.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/lT9hiic/94851077638.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/47ba183b-1f3d-4208-8abe-131814d70c2f/zosamapujuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75fb8ce-0911-432c-918a-1f150069f959/7058298047.pdfIn PDF document text
    • http://ketugida.rf.gd/office_interior_design_catalogue.pdfIn PDF document text
    • http://kasowudut.rf.gd/85118603374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/682eaf45-439a-4a8c-888c-d01b8e50d1f2/sibexuwugobaveku.pdfIn PDF document text
    • http://leranijaw.rf.gd/binding_image_xamarin_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d05c0c-4777-47ee-b434-375346c40db2/how_long_will_a_kinetico_water_softener_last.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91b1dd64-fca7-4d74-be61-d199e8a83879/asu_mechanical_engineering_systems_major_map.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 7

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_off0000fe3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3A 4704 bytes
SHA-256: 182de936bd44cbfa6217e47f262e56e82251c4c03112a6d196d107b875b8ad3e
font_01_sfnt_off00010e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E37 12020 bytes
SHA-256: 11a186b73fabef4f19ade656971383b6fd48fc6283ad7bb02efb0a5a45d624c0

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