Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07db5cb3200dc7c…

MALICIOUS

PDF

89.4 KB Created: 2021-03-16 01:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3b7d74d0b660021300c10eb11693c009 SHA-1: 598577520da82c3a002e88ff1d26f1528e1ecc9c SHA-256: d07db5cb3200dc7c32714a305e58266f213d2399b30fcc561a5918205c5bbae8
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 0.9993

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://gimoguvi.ru/strik?utm_term=corporate+finance+institute+fmva PDF link annotation
    • http://jekefidaz.mygamesonline.org/how_diversity_drives_innovation_a_compendium_of_best_practice.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/MSzz1ic/driving_rc_car_at_night.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/hcgegca/k_lite_fm_playlist.pdfIn PDF document text
    • http://vuwiwetidajin.mywebcommunity.org/tav_prasad_savaiye.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475852/normal_604470f2c3f21.pdfIn PDF document text
    • http://sufulilutidake.mypressonline.com/25701454557.pdfIn PDF document text
    • https://cdn.sqhk.co/vedasukuki/hgJVrjh/the_crossing_community_church_hilliard_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/iejaOii/8331409732.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/bwgdEdV/fugipag.pdfIn PDF document text
    • http://bexukavinawexov.mygamesonline.org/interpretacion_de_un_electrocardiograma_normal.pdfIn PDF document text
    • http://leporabev.mywebcommunity.org/ddo_summon_monster_ix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_603f9a173bd88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494669/normal_603e3d768545b.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/Vnjgy05/she_wants_me_dead_download_game.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/gvrgdgc/tidifelevodezivotakuna.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/fljagdB/download_game_fashion_story_mod_apk.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/does_oregairu_have_a_manga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/493ea70f-b8e4-488f-a173-0eeccc71cc9d/ipad_mini_2019_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82b41c65-ec8e-41e6-8f8e-db33861a6b5d/44468909986.pdfIn PDF document text
    • http://girofili.myartsonline.com/igloo_countertop_ice_maker_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9314bb57-cd6c-4c67-bf84-5461b5f50bf0/58016502983.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/zugixopixibiwuzedoxiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c041eaf-1934-4f9b-8470-4283f0ef4a85/how_to_treat_arthritis_in_the_neck_naturally.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_off00011af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF3 5092 bytes
SHA-256: 24ed5d498ffbf8ecd67a1136b5900356f14a34a2d0cd8dde6d3f9c455ac510fd
font_01_sfnt_off00012c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C36 12476 bytes
SHA-256: 1f2270303293306ef217c278465e1636a1db640357ad197dce8bc4872e09109b

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