Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d653b51077d66dd…

MALICIOUS

PDF

84.8 KB Created: 2021-03-29 22:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2f4adbe5776f0f5c92eb774a385a8fed SHA-1: 975db11c05d025646c8eb2ac3cf71ac465de4341 SHA-256: 5d653b51077d66dd87df306fb141c4f71a740f48ef69d233d7cba4ed60742326
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URL 'https://botokaw.ru/123?utm_term=antecedentes+de+la+democracia+pdf' is the primary indicator of the attack pattern, suggesting a lure to a malicious site.

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 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.
  • 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://botokaw.ru/123?utm_term=antecedentes+de+la+democracia+pdf PDF link annotation
    • http://abanca-electronica.com/80270613114ugku3.pdfIn PDF document text
    • https://fozipapuratub.weebly.com/uploads/1/3/6/0/136088586/xafalumonumu-nesutedason.pdfIn PDF document text
    • http://wemepena.iblogger.org/xuwedito.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://cafe-cok.ru/ancient_greece_mapab2xc.pdfIn PDF document text
    • http://lynciguest.com/navy_technology_accelerationsnng2.pdfIn PDF document text
    • http://gamedv.design/super_smash_bros_nds_rom_hack5xl47.pdfIn PDF document text
    • http://uablog.site/36889789855r26zg.pdfIn PDF document text
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/tapag_tewozomopegeni.pdfIn PDF document text
    • http://xonerorobigeke.iblogger.org/how_to_draw_a_pink_fluffy_unicorn_step_by_step.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/85e562cd-fc28-4884-838c-9e279c99d892/driving_theory_test_uk_2019_hazard_perception.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/workplace_chat_client.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/unlimited_photo_collage_maker_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/is_ff12_the_zodiac_age_worth_it.pdfIn PDF document text
    • http://bujazux.rf.gd/zeribitegumadamed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be37c3aa-6c6f-4b89-844b-9536f5945c31/safugapoxobibizevopa.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/ingenuity_boutique_bouncer_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abc75382-2c75-46b5-9d0a-941f3b6ccf68/83314531108.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/answering_teacher_interview_questions_correctly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f44e087-cae9-489a-afca-0d9ca6ae61a3/busegovulovujedutuzif.pdfIn PDF document text
    • http://junenizexi.epizy.com/bosodafejixevilojatem.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA48 5288 bytes
SHA-256: 38c2095018d94e29d4c535486983a6b6c4d729998b50a029d903fc953763e39e
font_01_sfnt_off00010c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2E 10148 bytes
SHA-256: 5a12b5dca294597ce55308cc1bb30e7eeb88a848b44c414901b8d4ce6daeb6df
font_02_sfnt_off00012eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EEB 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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