Malicious PDF — malware analysis report

Static analysis result for SHA-256 060677def1e6ff2e…

MALICIOUS

PDF

74.6 KB Created: 2021-04-01 16:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f7ed23c6724e30748eae01581f5126d SHA-1: df1adaba972475410d7d0dcf795cb2a2bda139cd SHA-256: 060677def1e6ff2e82ebea9a39dee794cc3e31d29310d32d58f819e664e29a36
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains numerous embedded URLs, with at least one pointing to a domain associated with malicious activity (midufefew.ru). The PDF structure and embedded links suggest an attempt to direct users to external, potentially harmful websites, consistent with phishing or malware distribution tactics.

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://midufefew.ru/wix?keyword=i+love+traffic+unblocked
    • https://cdn.sqhk.co/parabeset/hfAYEfb/ranked_choice_voting_maine_presidential.pdf
    • http://ndfnasg.xyz/81106592772kwgj9.pdf
    • http://help-lnstagram-verifycopyrgiht.com/peter_pan_play_script_jm_barrieb40br.pdf
    • http://vejuwetuk.mypressonline.com/latex_tutorial.pdf
    • http://remont-kvartir-otzyvy.moscow/najojakomuxevivediiytp8.pdf
    • http://uanews.website/quadratic_equation_area_problems_worksheetzttly.pdf
    • http://wazepewazivulil.mywebcommunity.org/minolta_maxxum_7000i_sd_card.pdf
    • http://zijafanovidiz.sportsontheweb.net/86441656656.pdf
    • http://twoup-viktoria.online/82365162842myseu.pdf
    • http://barberking.best/how_to_reset_hp_ink_cartridge_chipledg4.pdf
    • http://twitter-center.com/pixivasivijusevezw69q.pdf
    • http://berkeciftci.net/jimanotulatabaromet317do.pdf
    • https://cdn.sqhk.co/vadavenaw/idsihid/gageminaxemixe.pdf
    • https://cdn.sqhk.co/xinefegepe/giig6hg/scary_ladybug_granny_game_mod_menu_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b472a57c-b998-4f22-b124-68e6c05bffaa/tozirudolawanuzuredikebav.pdf
    • https://uploads.strikinglycdn.com/files/27f9edbc-9882-4060-b2a2-0a39d0ab39f7/how_much_are_swiffer_wet_jet_at_walmart.pdf
    • https://uploads.strikinglycdn.com/files/1337fdac-9ba1-47f1-ae12-ccace57b736b/75092453267.pdf
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_912d97c1ddbc48f6a9b4133bd991459c.pdf?index=true
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_3406de320dcd4d60a10a0a0f51e7b90b.pdf?index=true
    • https://ec2d952e-5494-46d8-b841-fee222248b17.filesusr.com/ugd/9713d5_504d70ac66d34f799284695404bd9e91.pdf?index=true
    • http://pusapovewazigu.onlinewebshop.net/86634483841.pdf
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_7aafba2684254d058ea0826dae4967fb.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6d1.bin
1c5d75e8e7a4de05c5b9ec51a24e5d3d6a98296382037e427603f8213fc1cacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D1 5036 bytes
font_01_sfnt_off0000f80a.bin
1fd3391d321a0da50ce337d3eb27dbdd1845951088758b2eaabfc886e555f51b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 10928 bytes

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