Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d27fae31823e5f7…

MALICIOUS

PDF

81.5 KB Created: 2021-02-26 21:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d1b0a5e44cd401f4c10bff992ebfb0a0 SHA-1: c99575fd0b655b5b3b41320379272d690bf4eff5 SHA-256: 0d27fae31823e5f7ab718da93f29edc25a45c2b260c1c477903206dc9282c202
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to obscure the true destination or distribute malware. No scripts were extracted, but the presence of numerous obfuscated URLs points to a phishing or malware distribution campaign.

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://zajinet.ru/wix?keyword=sorry+not+sorry+naya+rivera+download PDF link annotation
    • https://cdn.sqhk.co/wobuwozavenu/wplukig/space_wars_arcade_game_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/tjdjiix/melbourne_victory_marvel_stadium_2_november.pdfIn PDF document text
    • https://cdn.sqhk.co/kalijada/hjhie5M/archer_hero_stickman_bowman_blood_arrows.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/djjbjfE/gevazoxurapuminewamo.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/dOHFwhe/stick_ranger_2_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/hcCOEgj/logo_quiz_2020_answers_level_7.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/gfoizj8/tigedupotopuditokuwodepa.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
    • http://wefejaxofupun.rf.gd/what_to_do_when_washer_wont_drain.pdfIn PDF document text
    • http://tabetoge.rf.gd/what_to_do_when_you_are_miserable_in_your_marriage.pdfIn PDF document text
    • http://veguxakafopuvix.epizy.com/how_to_reference_an_online_article_in_apa_6th_edition.pdfIn PDF document text
    • http://bozolukiket.epizy.com/carbohydrate_metabolic_disorders.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/bcbsnc_provider_enrollment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/whirlpool_ultimate_care_ii_washer_drain_filter.pdfIn PDF document text
    • http://kixukiboromegab.rf.gd/seth_klarman_portfolio.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/49273268442.pdfIn PDF document text
    • http://roragopijejem.epizy.com/lodonosevumisubamekodubar.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 4964 bytes
SHA-256: c26b23c1384c3e4d23410b991bec075be2b27acf7cd92ad8efbb98e394e4e376
font_01_sfnt_off0000fa66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 2672 bytes
SHA-256: 9cd57f00d732bcb1aeb4a1e13de0fd5ad629f651ebb909842dd3c96f32c81812
font_02_sfnt_off000104d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D3 10928 bytes
SHA-256: a35141d5cb13136ca3575e609deadb3882d576b0837b66f9c1fb9cb4bfe65716
font_03_sfnt_off00012a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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