Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5b32c31ac1a5fa…

MALICIOUS

PDF

94.4 KB Created: 2021-03-14 01:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9a80f197838b72c2f316aff2e3d067bc SHA-1: 5f765f76eec89825d4a59ce7c0f2fde34b900390 SHA-256: 2b5b32c31ac1a5faa1ce4c2a41155d0f73a5a5832219a91f5e594799de663398
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 0.9997

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://botokaw.ru/strik?utm_term=sony+cyber+shot+5.1+megapixel+camera PDF link annotation
    • https://cdn.sqhk.co/bemaxopig/aighjja/blues_radio_athens.pdfIn PDF document text
    • http://beremoter.online/the_founder_movie_guide_quizletukj8v.pdfIn PDF document text
    • http://leftoutclub.com/53010628445aru14.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/oHbiapd/ship_simulator_2020_mod_apk.pdfIn PDF document text
    • http://xogabimodefage.iblogger.org/balfour_declaration.pdfIn PDF document text
    • https://cdn.sqhk.co/paxelababeg/NYhchfz/lego_batman_beyond_gotham_apk_2020.pdfIn PDF document text
    • http://alcexpress1.xyz/50227832079c7kd0.pdfIn PDF document text
    • https://cdn.sqhk.co/pipoxodul/gjDiahh/everything_5_pounds_size_guide.pdfIn PDF document text
    • http://sunny-web.ru/contra_nes_game_cheat_codeslf2uw.pdfIn PDF document text
    • http://smartcoin.design/refesurepadoxet82o9.pdfIn PDF document text
    • http://helplnstagramoffice.com/ozeri_scale_manualtenqo.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/ijgkgjK/what_does_bucket_list_means.pdfIn PDF document text
    • http://gromstroy.com/best_cisa_study_guide0tvsf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_b4f82bb42cbd4dc88253b039cc2ab735.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdcb976f-148e-4b2f-8f52-7e1b037a6029/shoprider_mobility_scooter_battery_charger.pdfIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_91063f7384ad4a688fe697e382fb5ddc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ab4541-7486-4cf9-90d6-e4a101529c89/96954240120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dbd5658-80fd-48e0-b071-be2849d42ebc/what_is_in_the_glycolytic_system_carbohydrates_are_breakdown_into.pdfIn PDF document text
    • http://dofenepebasep.epizy.com/55136515615.pdfIn PDF document text
    • https://48bd7725-9370-4d18-884e-e75d7b70c9c4.filesusr.com/ugd/f241d9_e43728628e9042debe3fa59c8d87c42b.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000122f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F1 2912 bytes
SHA-256: b3177c8de935bf2e05ba58035bb430970af2c83108b60a2dfb12b0772094c699
font_01_sfnt_off00012d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4C 5968 bytes
SHA-256: 8b2711e4f651968810ac62fc7d83900f4ee74331b7b96dbc74a19318020cb6cf
font_02_sfnt_off00014195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14195 12328 bytes
SHA-256: 4ff8d520ea28ce215156b9dd7fbdd23bc1c6f4d72a70946df7717867b03c8ad5

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