Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda9bedca2cdbe0f…

MALICIOUS

PDF

80.9 KB Created: 2021-04-13 12:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b482845c6cde317e4715c5c0d706a573 SHA-1: 80215ef21e83862a2f19a2b463dd650a9f89d355 SHA-256: cda9bedca2cdbe0f92cb9f3134973293e804f335c0cd020ebeb241fb060adcdf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=crusader+kings+2+best+starting+attributes PDF link annotation
    • https://cdn.sqhk.co/bexefoboxevi/ja7ihhd/dancing_line_2021.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/7161781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446285/normal_6031c5bd44058.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/ieggeGq/btd_battles_mod_apk_6._8.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/gdCbThb/best_world_war_1_flight_simulator.pdfIn PDF document text
    • http://gajuduxotam.iblogger.org/jejaloxibabewi.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/jjicu55/flip_flops_bar_myrtle_beach.pdfIn PDF document text
    • https://rixajijinuroje.weebly.com/uploads/1/3/4/4/134473879/3c1703c0056d.pdfIn PDF document text
    • http://mawobireti.iblogger.org/calendar_planner_template_2019.pdfIn PDF document text
    • https://lifalaril.weebly.com/uploads/1/3/4/8/134883644/zixijibubaw_sajepesoninagi_xatufuredataxis_lorupolidine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500438/normal_5fd084b1e0115.pdfIn PDF document text
    • http://gisisavodure.22web.org/anandam_telugu_songs_320kbps_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451019/normal_5fd71b2438bf6.pdfIn PDF document text
    • https://kixipebirivevex.weebly.com/uploads/1/3/0/7/130739750/4044972.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7c9e9c40-2b96-4f88-8065-b5ff5e495659.filesusr.com/ugd/3bfcae_1dbb56e800a545769ee639a0305e1d94.pdf?index=trueIn PDF document text
    • https://e7f45dcf-1957-410e-85b1-216e85a225c4.filesusr.com/ugd/a2c2bc_165200390ae345649ac85c22fc008867.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9663581f-ead7-4201-85b5-372344b06785/vokapafel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fcf679d-691c-4c9f-b548-52f81f9867bc/what_is_the_best_social_media_marketing_tool.pdfIn PDF document text
    • http://resegubus.rf.gd/kotabatuvenixizazofaje.pdfIn PDF document text
    • https://983c8978-ad56-435f-a988-47358aa6040c.filesusr.com/ugd/06a663_5d542b561fa44f2fb120ef133d6f4af2.pdf?index=trueIn PDF document text
    • http://fuzuxoluzetirig.rf.gd/lufisokexav.pdfIn PDF document text
    • https://c5c1e25b-3ca9-4f8f-aecb-0ee3b29cb37b.filesusr.com/ugd/f4fe7b_1e6d98d860da4ffc930e8f7c0d2225f2.pdf?index=trueIn 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_off0000fe15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 5200 bytes
SHA-256: 23d8621b37f90d5203a57370da80067208c4819b7bdcd3ae049b75f438dad597
font_01_sfnt_off00010fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD0 11452 bytes
SHA-256: 56baed93008d741a138f1f09af2464280d6c87424d2c1f9856daa453523590d8

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