Malicious PDF — malware analysis report

Static analysis result for SHA-256 808aae2bdbc213ad…

MALICIOUS

PDF

73.6 KB Created: 2021-03-27 17:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fdb7d6dcd5a3e53c9ea7136aafb3a7c5 SHA-1: 0d04e9e173fb2364388cfdfaa2a3aff5f4c95374 SHA-256: 808aae2bdbc213ad99289dfa9660040cc9bc5e11201300c64c1ebd28b5748181
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant heuristic firing indicating it functions as a link farm hosted on disposable domains. One of the primary external URIs, 'https://lozipotod.ru/award?keyword=alone+piano+pdf+heart', is directly associated with the malicious classification. The ML classifier and ClamAV detection strongly support a malicious intent, likely phishing or malware delivery.

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://lozipotod.ru/award?keyword=alone+piano+pdf+heart PDF link annotation
    • http://likedizar.medianewsonline.com/how_do_i_reset_my_funlux_camera.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403948/normal_5ff263fdd61d7.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/bjjhbhe/free_microsoft_word_daily_planner_template.pdfIn PDF document text
    • http://rigudozefogo.mypressonline.com/how_to_adjust_color_on_a_vizio_tv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478123/normal_5fcc1bcb50d09.pdfIn PDF document text
    • http://fikakutipid.mygamesonline.org/sezabamage.pdfIn PDF document text
    • https://cdn.sqhk.co/duxafanuke/HWhdhGt/roku_premiere_plus_vs_ultra_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452392/normal_5ff0a673b4ea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486965/normal_603fe63f42ad9.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/aZggKQx/bearded_dragon_habitat_ideas.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/68291718425.pdfIn PDF document text
    • https://cdn.sqhk.co/metevetufi/gjii4Gk/drake_and_josh_galaxy_wars_episode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_605892cf7a47b.pdfIn PDF document text
    • https://cdn.sqhk.co/xorakulenido/bhaugft/17557824125.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/BcEJgcf/darkest_dungeon_gameplay_no_commentary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_4ef36372e5e145dfb8c203e20d50562a.pdf?index=trueIn PDF document text
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_8978253c8e1741e7b681c0b242c93618.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3983542-c9f8-415d-ba2d-a3ab1eec4849/are_door_bouncers_safe_for_babies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47db758d-6e71-4db6-83d9-80885b16b90d/how_to_get_a_business_loan_in_indiana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04280232-d3d8-4823-864d-997de11b564c/jazozofamofar.pdfIn PDF document text
    • http://marurutefa.atwebpages.com/best_books_of_all_time.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_off0000e0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D8 4940 bytes
SHA-256: 130ae410c621fd49f2eb9f09ebb2735831050c846b2c668c85c944ccd2b2ff96
font_01_sfnt_off0000f19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19D 11804 bytes
SHA-256: d188e67e617a0bdf9f9121e81750b2f3e3c7f45d8e45e5e8381303eb2e418162

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