Malicious PDF — malware analysis report

Static analysis result for SHA-256 a38505ec0883c580…

MALICIOUS

PDF

84.4 KB Created: 2021-03-08 04:31:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58de7a63e9d5eb89761f554c10969fb4 SHA-1: 117a3530ce27d032e4e79632bfbb6e57e75cec97 SHA-256: a38505ec0883c5801e379357227b9f34dc09c6d3139e38c7aaea6909e1bef82c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/wix?keyword=cardiovascular+system+study+guide+pdf PDF link annotation
    • https://cdn.sqhk.co/sugezigo/bXMhi34/new_notification_ringtones.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/80221985479.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/Fjjmmge/9381652285.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/how_to_explain_personification_in_poetry.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/it_was_a_dream_poem_analysis.pdfIn PDF document text
    • http://rulajamizap.getenjoyment.net/vabozerijuwutokesiwad.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/fc1d416f-d27a-4fe5-a1f9-ba072533f3b1/xuworupijosaxok.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/59784866545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf19f09-e7f7-487c-90e8-e676990f8d55/superman_and_me_sherman_alexie_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5942a117-a405-4e6a-9df3-902bced0a455/tonadotajanube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5498c9f-1d9d-4929-8b94-87a563b6438c/mamipidutilerukimegoto.pdfIn PDF document text
    • http://damowepoko.myartsonline.com/where_is_midwest_located_in_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/free_birthday_flyer_templates_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/the_black_image_in_the_white_mind.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ce850a-95ce-4633-bf68-204870184e2d/river_cave_bowling_green.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46d736e-b950-46f3-a90f-60bb8ec8a505/night_owl_security_cameras_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26ad9b26-3c22-4627-aa9a-c3469f5b26d3/sutewugenuzowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88b706e-971b-4ffd-bdd5-f0d2b577afe3/64243154750.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_off00010d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5C 5540 bytes
SHA-256: e741f4ab093acc57abc2aa4eb7c880b5ab76b2bce75da6d8c27e155e4bde118c
font_01_sfnt_off00012030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12030 10720 bytes
SHA-256: dedfbaeb22a14eb1ca3370e0ce33fce777b9e2727c1dab0216f85bd7c4266755

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