Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ac000dc6b62ac6…

MALICIOUS

PDF

57.7 KB Created: 2020-10-12 14:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 932e206c126b139fb1b2ca828cabe6e7 SHA-1: ee86357d426bcd01699170727e5ec16d7845b520 SHA-256: 76ac000dc6b62ac686c0a4d3b11a44a895ae1fde05fbc75d02741cd460f68433
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://gettraff.ru/strik?keyword=proguard+android+l%25C3%25A0+g%25C3%25AC In PDF document text
    • http://zasugotad.deladevillesvintage.com/uploads/1/3/2/6/132681293/pexunulazemalabeg.pdfIn PDF document text
    • http://kamejabo.phoenixparkour.com/uploads/1/3/0/7/130739061/906971547b33391.pdfIn PDF document text
    • http://files.yconnyi.org/uploads/1/3/1/6/131606638/7aaaea07b04f4a.pdfIn PDF document text
    • http://files.embracechurch.co.uk/uploads/1/3/0/7/130775868/b9041dc20da0fc9.pdfIn PDF document text
    • http://ramomam.spottedvalleyappaloosa.com/uploads/1/3/2/8/132814930/zulivuka_wusasevewew.pdfIn PDF document text
    • http://zisusulud.emeraldcoastbilliards.com/uploads/1/3/0/7/130775219/4676233.pdfIn PDF document text
    • http://files.jrcnboergoats.net/uploads/1/3/2/6/132681293/9712038.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/1/0433/9440/0423/files/understanding_second_language_acquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8192/7318/files/45699133539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2126/0184/files/awful_pick_up_lines_tinder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d0e012-3b34-4113-a61e-86fe0befb86b/92312948352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3390d6-092a-462e-8ebd-7b8635b632e1/lepatejedonavux.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_off0000a150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA150 5104 bytes
SHA-256: bcd7946435971d86ee4fac739577adbd0b1f2673845047a63d642810b858b634
font_01_sfnt_off0000b225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB225 11284 bytes
SHA-256: 735c434bee29bc01ceeae90fa7db29173747890fd1661129973e61e9d384749c