Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ddc238e8fe2faee…

MALICIOUS

PDF

45.1 KB Created: 2020-10-09 00:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 85d3b7613650b62f9b495dede72460fd SHA-1: ea36352a44a4fda0c2757d3ca678676f3f52d65c SHA-256: 7ddc238e8fe2faee488947699349bf774d26b12837d3d98fb4b3b04c98084fcd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/strik?keyword=duralast+700+jump+starter+manual In PDF document text
    • http://vulajuxu.ohsnapupenn.com/uploads/1/3/2/6/132695746/ditariw-bubalibejir-wewemijon.pdfIn PDF document text
    • http://files.artbyjenduran.com/uploads/1/3/1/4/131413718/lugazesilofaw-tosiwo-bezefibase.pdfIn PDF document text
    • http://files.jgulbrandsen.com/uploads/1/3/0/8/130814687/menap.pdfIn PDF document text
    • http://vumazoba.theclaylion.com/uploads/1/3/0/8/130813528/ratamoxifakifikow.pdfIn PDF document text
    • http://julaw.honeywestco.co/uploads/1/3/0/8/130814423/vabominet.pdfIn PDF document text
    • http://files.authenticmemories.com/uploads/1/3/1/8/131856212/nogeme-tuvedajo-tazuga-vevuzepo.pdfIn PDF document text
    • http://files.psproofreading.com/uploads/1/3/1/4/131437750/padul-durovasedajere-zasijimal-zegulebelibe.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/43d4b1f3-dff8-49e5-82f7-816571683c86/25147196213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1705/1553/files/d20pfsrd_advanced_monster_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8605/3527/files/how_to_block_a_youtube_channel_on_tablet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1288/0541/files/sufilobajizuxotuzaxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6895 5260 bytes
SHA-256: 6fff86b71bf3c0504a588d40ba0d02a07dbde4559ef60a7408ebeb4da160c36b
font_01_sfnt_off00007a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6A 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off000082f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F7 10704 bytes
SHA-256: 456a3b94f8623289e5a70d7a319d9be1e944b285f0047982c0a58512396f4926