Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2047d2985ff90f…

MALICIOUS

PDF

72.9 KB Created: 2021-02-18 14:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ddbd6ca801d90bae1f99d811ac8992b SHA-1: 1f31094be37a0e13ab023a68a561d497106e954e SHA-256: db2047d2985ff90f0758e853221af9a9edc91c70b3f51b312947feca93a797e9
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the overall structure point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=michigan+medicaid+provider+manual+2021
    • https://cdn.sqhk.co/saligoliti/axjdieC/54509722549.pdf
    • http://startbastar.online/is_the_darkest_minds_a_moviespp48.pdf
    • http://servicesforsupport.com/civics_class_8_chapter_4_question_answerzi2j5.pdf
    • http://uanews.website/xinabosawddzc1.pdf
    • http://lnstagramverifiedsbadgeforms.com/56994294512exybi.pdf
    • https://xafituku.weebly.com/uploads/1/3/4/8/134863640/06d0fe2.pdf
    • http://wisitens.online/hd_long_free_pornoq77o.pdf
    • https://cdn.sqhk.co/gawarebadal/f7jbgdg/retropie_gba_emulator.pdf
    • http://glossywp.online/gta_5_online_haircutsqz6ek.pdf
    • https://bojuwidus.weebly.com/uploads/1/3/4/6/134698781/nixiradukewumab.pdf
    • http://hallhq.xyz/batman_arkham_origins_apk_data_modw0ppk.pdf
    • https://mobinefoju.weebly.com/uploads/1/3/1/3/131398425/pofupamevamim_mefasu_jujubapulup.pdf
    • https://cdn.sqhk.co/wediximewoza/gcQghig/megan_is_missing_netflix_2018.pdf
    • https://cdn.sqhk.co/zikonidenijo/c1T1pja/piano_man_lyrics_billy_joel_youtube.pdf
    • https://cdn.sqhk.co/wuzosiboweja/c0ITqkR/73045052976.pdf
    • http://i12tws.website/cuban_love_poems_in_spanishn47la.pdf
    • https://cdn.sqhk.co/pugirunosamo/haYNnjf/archero_best_weapon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d13c.bin
87472a7a5c99e4ac0e1f222ec0962e726879d8ff03b315289256e9e6c533809e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD13C 5500 bytes
font_01_sfnt_off0000e3bf.bin
566bd390acf5d85e970fcb228f97e58df04f0d9bb98ddb82f0dff41fc969d83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BF 10776 bytes
font_02_sfnt_off00010852.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10852 4324 bytes

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