Malicious PDF — malware analysis report

Static analysis result for SHA-256 d408c2d6ec2290f6…

MALICIOUS

PDF

74.7 KB Created: 2021-03-23 10:43:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8107ea1d20fe85cebf0a42d1828e3fa9 SHA-1: 1d34aa953d0346ce44a6e801b681f3afc8f9bc0c SHA-256: d408c2d6ec2290f6f163366309e39b2b32342c67e5e128de88bae78f5d5a1a2f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to 'jottigo.ru' and disguised with a search term for 'mackie dl32r dante card'. This suggests a phishing or malware distribution attempt, leveraging a seemingly relevant search result to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://jottigo.ru/strik?utm_term=mackie+dl32r+dante+card PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5fd098171909c.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/ihGigWi/cake_baking_classes_utah.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/kB0hDoO/44168560218.pdfIn PDF document text
    • https://cdn.sqhk.co/wazotifuk/3jevWaz/world_war_z_gameplay_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/ehfRDEO/condado_puerto_rico_restaurants.pdfIn PDF document text
    • https://cdn.sqhk.co/vamosopon/ifPFf4r/chicago_weather_tomorrow_evening.pdfIn PDF document text
    • http://flylovel.com/tifumibakovasunedanonagch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387573/normal_5ffe0a0589a4a.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/chdJiee/amazing_spiderman_2_android_gameplay.pdfIn PDF document text
    • http://vanlit.ru/mofamodugovazofagulpwbuy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453720/normal_6048a49ac5b21.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/HQiuibx/death_worm_free_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kixepijap/ZvcJge6/samsung_internet_browsing_history.pdfIn PDF document text
    • https://cdn.sqhk.co/pojukitogex/fhfoSyf/atomic_redster_doubledeck_3._0_gs_race_skis.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/0hfjigE/bmobile_trinidad_vacancies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/how_to_transfer_property_deed_in_pennsylvania.pdfIn PDF document text
    • http://mimelaketikapex.rf.gd/pevizafugivezinakepe.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/waw_leviathan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/neet_exam_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/99043862513.pdfIn PDF document text
    • http://lemujiv.epizy.com/99465835337.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE326 5120 bytes
SHA-256: 30fb846de8ff9fadc9ae42837899345c78dde7218142b8badf9cbd81ffcfcce5
font_01_sfnt_off0000f4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 12784 bytes
SHA-256: 2378b14a126a7ea775ca2653f39dde681100342272dacd03520f6c9ff722f5e1

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