Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a8d95a6b34a3ed…

MALICIOUS

PDF

35.6 KB Created: 2020-10-05 20:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b7f485d99af4da026f0985d6d7d41d0e SHA-1: d542a6048da1cfcdc93ecb94c1799d0f20ae2c61 SHA-256: b6a8d95a6b34a3ed80797141a2f186dbdb613135e28bb3763e8b68494b65896d
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=download+mod+cleo+apparel+gta+sa+android In PDF document text
    • http://sogowa.reciprocalminds.com/uploads/1/3/1/4/131482995/7049471.pdfIn PDF document text
    • http://virewiwew.secondstoryhoney.com/uploads/1/3/1/0/131070894/bb3aa89b1b1acd.pdfIn PDF document text
    • http://files.dasdk12.net/uploads/1/3/1/4/131438019/mevaziretuzen.pdfIn PDF document text
    • https://site-1039903.mozfiles.com/files/1039903/tenatepotovovizini.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/mowodidutatezudefomase.pdfIn PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/gogan.pdfIn PDF document text
    • https://site-1043457.mozfiles.com/files/1043457/23971521514.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3534/8130/files/mexico_profundo_bonfil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3498/8703/files/funny_math_memes_clean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9880/2838/files/lincoln_and_johnsons_plans_for_reconstruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5210/5881/files/komowitisozoxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6cb70cb-afca-405a-97e3-5ae37f468132/famiwufupisigubolose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb40cd70-3906-4845-87b3-61600c70c919/9538897875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3031929-2bcf-4ece-b62f-854880a0a6b4/biruxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9f5586-afdc-4875-bed7-0085d535d8de/5830496218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3572d112-7f68-48ac-8b53-c9412ac63da1/rujut.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_off00004c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5D 5484 bytes
SHA-256: 40292a307fea08f5b6f8aa97ceed2b2abc44eeb952392d21bc4ed664d5327310
font_01_sfnt_off00005f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F06 9976 bytes
SHA-256: 601287ae7ee3476d9ad2f0b9dea46fb8fc186e93668ae172879cf140951975ed