Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da1d73d20252cf3…

MALICIOUS

PDF

75.0 KB Created: 2021-03-23 08:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d2cf4a0b87b9f6b501de8e2268e59786 SHA-1: 9ec179581aa41cd14f63b6f18a8b2b70969fcbd5 SHA-256: 2da1d73d20252cf3ea87745044b620905199d15235b50ba46ac0f73db0bd5ae6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with attempts to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/wix?keyword=create+a+ride+2+y8 PDF link annotation
    • http://italylife.pro/graco_nautilus_3-in-1_car_seat_booster_installationdsd0s.pdfIn PDF document text
    • http://vittorguxx.site/menanogifotumuduvxqro4.pdfIn PDF document text
    • http://tk-pobeda.site/miwazokeburabaselukuzdgbge.pdfIn PDF document text
    • http://forkidsshop.online/wolf_of_wall_street_canadian_netflixm8vsk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494657/normal_5ffb7ee4bf06e.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/hegKhbJ/49511653851.pdfIn PDF document text
    • http://zuxuvikewi.sportsontheweb.net/conveyor_belt_technique_design_and_calculation.pdfIn PDF document text
    • http://forsage.pw/91135350725tuojb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5fe2a9f08d915.pdfIn PDF document text
    • https://cdn.sqhk.co/setawigiz/Whdvjgx/85689191518.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/idhdDgd/tiny_table_tennis_games_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwolupenilu/jfWhgjb/download_game_monkey_racing_mod.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/18820580641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_604cb72f8109e.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/gfid0sj/super_hexagon_bot_download.pdfIn PDF document text
    • http://pajuwepubawip.sportsontheweb.net/how_do_i_reset_the_filter_light_on_my_ge_microwave.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_83d292be017d48c4b2872eff22361c0c.pdf?index=trueIn PDF document text
    • http://rizivubonulej.atwebpages.com/sushi_express_panama_menu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b96d2a-a7da-423b-9e0b-e84c7b53c32d/la_biblioteca_de_babel_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9bf7af2-63d6-4586-9507-ec93aba50fd5/fibufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879b8121-5771-4e25-9d33-4e2dc98f073e/vezigutabufulaponoru.pdfIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_7c59eb9245da4a158a63cbecd41179bc.pdf?index=trueIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_ff0d05b087684f4db9f5f4745b7b9d37.pdf?index=trueIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_12b20a6482a646f2b3ba15fa0bc7ed0d.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_off0000e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76D 4940 bytes
SHA-256: 8686f7e026dcb30b16dd258fe6d584f60ec6b9ecebbe79c46293c5e5dead8e94
font_01_sfnt_off0000f84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84C 10944 bytes
SHA-256: 5c4aed4d21bb1418baf3d8c304130f889a2ca0e2d69ca0b912de526b7289bd1e