Malicious PDF — malware analysis report

Static analysis result for SHA-256 96299676b02c40d0…

MALICIOUS

PDF

75.3 KB Created: 2021-03-29 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8c7007f9c9dcc1408a3bc31673e7a3a4 SHA-1: a14427357eefea5f53b2bae1a59c15b1abb8e401 SHA-256: 96299676b02c40d034a8cc716fb4c6897755d3fcf2ca0e2ce2826689a64c442f
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with several pointing to potentially malicious domains. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a high number of distinct hosts and links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jacksth.ru/wix?keyword=d%2526d+4e+all+classes PDF link annotation
    • http://sipipewawezizuf.getenjoyment.net/50893050641.pdfIn PDF document text
    • http://tesar-krd.ru/a_scanner_darkly_streaming_engh9axm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444647/normal_60224a67e889f.pdfIn PDF document text
    • http://digitaloffice24.ru/58023932456us51l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463005/normal_602741029a118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_602f1db010f49.pdfIn PDF document text
    • http://boomua.site/mechanical_keyboard_amazon_prime_day3y57t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5feca0494ed24.pdfIn PDF document text
    • http://leadtop.co/which_vampire_diaries_quizrdpcj.pdfIn PDF document text
    • https://cdn.sqhk.co/pikuworano/Khcjfie/97024659104.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/ihhjhcT/troll_face_quest_video_games_2_level_30.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hbhbjc6/easy_dessert_recipes_with_at_home_ingredients.pdfIn PDF document text
    • https://cdn.sqhk.co/zadexona/R6heoPY/1968_pandemic_deaths_worldwide.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/4a65cdc6-a23c-4096-b43c-5378914a2cef/papafudega.pdfIn PDF document text
    • https://f27bca7f-571c-471d-9e77-92385e6dfcd0.filesusr.com/ugd/9a0fa1_5cd10dacf29048be98d92925431bf172.pdf?index=trueIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_5443893ace8b413a9074e2130c5a0c68.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/512f8098-23a6-4397-a697-55e79de46510/what_is_a_2007_lexus_ls_460_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7120f1c2-94d4-49fc-8e63-64c4ceb3188a/what_is_leave_purchase_allowance.pdfIn PDF document text
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_6109d237ce544c14a63c6be1c770e490.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3414ecb-e719-419a-85cc-84ed1ddd2faf/38663510742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29531d6-5d22-4781-b408-c86e294d394f/sikewapog.pdfIn PDF document text
    • http://vakogez.myartsonline.com/standard_metric_thread_size_chart.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_off0000edac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAC 4156 bytes
SHA-256: 7b9a78bc71d00e4bcff8473d51fc82c270a18144a13d22e5cfd906eda86eaada
font_01_sfnt_off0000fbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDA 10612 bytes
SHA-256: 88efa50ecfb23f8848e16462cc9847133368be6b7ee8014d41a67362bd2680fb

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