Malicious PDF — malware analysis report

Static analysis result for SHA-256 3efc02e6fea1b24e…

MALICIOUS

PDF

41.2 KB Created: 2020-09-30 00:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93ee5980e9a6296cb9517cc0c2e0ab9d SHA-1: b9d89d8db20e4a3f5d64a40ddc71c2aac58ab2ea SHA-256: 3efc02e6fea1b24e60f4db4239c2f3a7fed2ce8b81a88f52b690a9858b0c0763
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=room+and+pillar+mining+pdf In PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/99628328598.pdfIn PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/sigizajofij.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/xowezabolijemezonafigap.pdfIn PDF document text
    • http://luwitex.colinbergmusic.com/uploads/1/3/1/4/131407315/5619580.pdfIn PDF document text
    • http://gukipova.5ivezero.com/uploads/1/3/2/6/132680799/zokitilukeva.pdfIn PDF document text
    • http://files.estattooremoval.com/uploads/1/3/2/8/132815365/xekagigafowag-numetojuka-mexezedofaka-libodenunuv.pdfIn PDF document text
    • http://files.borninswedenblog.com/uploads/1/3/2/3/132303020/nadowuzele-tikefufuxiguk-girepajivid-rulonola.pdfIn PDF document text
    • http://files.bevgilliard.com/uploads/1/3/0/8/130874121/2739840.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/49653e81-673f-4b91-a677-820bb5a44973/tirixebeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1e477d0-8366-4f4a-986a-33ecc01c283f/wapojuforo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fabb91-0d8d-4a3c-8cf8-6480fed1fec4/86125940510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b335f995-e4bc-4814-9065-697d0e3eb294/rumipavuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53cd674a-5f24-43b9-aa0e-dad964292e1e/kogumikis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/859480b5-6b5e-4c01-a62c-620f63f29ac3/29549830403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ebef72f-d89f-429b-9f92-9ef47cfc8e89/zogupove.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_off000063cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CF 5192 bytes
SHA-256: f9fe30cc91bea6ff3a3e7c843d75e2a0a252c259fdd3c022457d1bb1e689cc83
font_01_sfnt_off00007569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7569 10176 bytes
SHA-256: 25a15c524e842851531ab981658943c7bbeaf44e9fd69adaa03b643b639ecfd4

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