Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e7cf055dfd7a65…

MALICIOUS

PDF

70.0 KB Created: 2021-03-06 23:02:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a964c80d9cb5cdb674564f60eaedc58b SHA-1: 04541e330f16a34fd1d4757ba3e74a4c1d814023 SHA-256: 36e7cf055dfd7a651a4d450a445978104338afe378c45005b783b3bf1dca2243
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=are+skin+cells+haploid+or+diploid In PDF document text
    • https://cdn.sqhk.co/pijujuweg/Ez6jdha/wikipedia_soul_knight_codes.pdfIn PDF document text
    • http://hellochildren.online/how_to_reset_a_water_heatervzgbq.pdfIn PDF document text
    • http://bit-ipo.ru/18109711653jv94u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455179/normal_6010fe4846edd.pdfIn PDF document text
    • http://mmamba.ru/lekevodemezumutoduph691.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/54mhhzX/24162305235.pdfIn PDF document text
    • http://getveran.site/divadazebagazirecyts.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/b1mWMid/lominatizelid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451970/normal_602f39d36b337.pdfIn PDF document text
    • https://cdn.sqhk.co/febapaji/706ZjbH/44152219969.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/9iiqihP/17284172342.pdfIn PDF document text
    • https://cdn.sqhk.co/bazexolareja/ie8pswW/68003843607.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413012/normal_6008ed6cb7efd.pdfIn PDF document text
    • http://pravagims.net/34156431718ca3kc.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokonabat/egfKjfk/86671516251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408471/normal_603f556d7e112.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/a8c590b0-8954-45d9-bf89-7a295aa560f6/quadratic_equation_examples_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/136afa4f-ba20-4aeb-b7ab-f80f0a518786/what_are_the_different_types_of_figurative_language_and_what_do_they_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b578d6d-0acc-467b-95a2-bdcc5878b5b7/furilotekuxazasumena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb1a0f0b-dbaf-448b-99df-fc11ffd2a76a/gubigalawisinedudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaab0d0b-abde-4fb6-a554-47a266a0d6d6/vevuvulunodedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2d99a9-8619-439d-82b1-d3bf04dc433d/washington_redskins_quarterback_injured.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d2dad7b-8a40-418b-b5c0-964d1e37e29e/48444477263.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_off0000d6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F0 5212 bytes
SHA-256: 8a2d1bb7c768674f337ae2ee6f4d287db6282f9c35eee543e7899c1b38f013a5
font_01_sfnt_off0000e8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A2 9956 bytes
SHA-256: 77bb0825790145285625d11f1e4142a0fed837a1c2a241df6907c7b6cf48df8f

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