Malicious PDF — malware analysis report

Static analysis result for SHA-256 f62a3c8cb1309118…

MALICIOUS

PDF

80.2 KB Created: 2021-03-11 05:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 26560885737046881cfd8db6bf34bef7 SHA-1: 07dfd095fe4af8b522ce1cf6788827f320f6b32a SHA-256: f62a3c8cb1309118fa8511d977f410117795492dc9e478015526fc4195b450e8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to 'dugedepap.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Environmental impact report requirements', aligning with a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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/123?utm_term=environmental+impact+report+requirements PDF link annotation
    • https://cdn.sqhk.co/wifilivemij/Dxdghhg/9259119706.pdfIn PDF document text
    • http://thelait.pro/john_deere_gator_ts_maintenance_kit5dtkr.pdfIn PDF document text
    • http://urolog.xyz/holt_biology_photosynthesis_and_cellular_respiration_chapter_test_answer_key5tomh.pdfIn PDF document text
    • http://jewigekavevexi.22web.org/paleolithic_tools.pdfIn PDF document text
    • http://midoponivejumod.22web.org/dukopagukogep.pdfIn PDF document text
    • http://bred-enligne.com/descriptive_writing_worksheets_for_grade_7y2wod.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/egfMvjd/julug.pdfIn PDF document text
    • http://laulu-go.ru/niturojibafnp00o.pdfIn PDF document text
    • http://bevurib.22web.org/nivumuxofesobexuzelijoguw.pdfIn PDF document text
    • http://seomagnat1.online/alavani_marathi_kadambari_freese8u8.pdfIn PDF document text
    • https://cdn.sqhk.co/sagitusat/jd1Wijb/community_service_project_ideas_for_schools.pdfIn PDF document text
    • http://nuveclovet.xyz/pdf_to_image_converter_cie1f0.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/ibA7dNw/gun_sound_download_mp3_pagalworld.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/heijhgh/13287523737.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/e1a5e67a-e222-4543-8ca8-1af8b6d7ed55/vapitukuxivuxagexuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf0d7f3-688e-48b0-b217-9bc075ea1c93/the_great_awakening_contribute_to_the_american_revolution_by.pdfIn PDF document text
    • http://rajiwewovipu.epizy.com/bp_reference_standards_coa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3fccebe-e828-4c37-8c7e-62573e291098/how_to_play_codebreaker_persona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e370653-3c47-41d8-a2f3-042fb02394cc/interpersonal_communication_theories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb288ddb-7c14-48b4-9d80-e0ed17b15373/29730711023.pdfIn PDF document text
    • http://govilike.epizy.com/vipufipiwukopin.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_off0000fc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC82 5220 bytes
SHA-256: 8cedafbcc5a9a0afabe907ac0d8c06ae89a7b64e1793e4f4c151d1a0644361b9
font_01_sfnt_off00010e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E36 10728 bytes
SHA-256: 7b97e8ea1220ada2aca259623614b66ddb6161a4beee593d0bd4bd3798a88922

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