Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6ae981c435cd25…

MALICIOUS

PDF

41.0 KB Created: 2020-10-01 05:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ada46e78a6d51bc80e90e9dc48d99a40 SHA-1: 74a09c4f51860f1e30eadbcf4022ed9b3694be8d SHA-256: 9e6ae981c435cd25c5a6205bab4d4ae3f14e755ecdb3f21ee8933c735fc03185
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=trane+air+cooled+chiller+pdf In PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/zavujo.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/11408755431.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/14421034899.pdfIn PDF document text
    • https://site-1037125.mozfiles.com/files/1037125/jatavuzujanuxoni.pdfIn PDF document text
    • http://gelejob.ricotroostphotography.com/uploads/1/3/1/4/131408008/c00d4f1a9db39.pdfIn PDF document text
    • http://pelejo.arcawa.org/uploads/1/3/1/0/131070450/949458.pdfIn PDF document text
    • http://files.thurstoncountyrw.org/uploads/1/3/0/7/130775647/30e2441e722b.pdfIn PDF document text
    • http://ninakuf.the-sas-mom.com/uploads/1/3/1/0/131071157/7823135.pdfIn PDF document text
    • http://tixazizur.rocknrollroadtrip.com/uploads/1/3/0/9/130969724/rosusupofozel.pdfIn PDF document text
    • http://xodapa.lwvsouthtonka.org/uploads/1/3/2/6/132695584/69288.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9781e890-99b9-48bd-a1cc-f4a4ee945af2/vozadirutuwolururaluju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b080a31f-da10-47ba-a046-50c279da9d70/medetuxoxuxivofemi.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_off00005677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5677 4720 bytes
SHA-256: 68716c677ee331832a62c010117ce92348e26b5476e61c3270f4dcac9627cd36
font_01_sfnt_off0000665e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665E 10252 bytes
SHA-256: e9bf2746f4631c63aa931c45b1b82121f4db780b7a2f4717b9f56cf297c9397e
font_02_sfnt_off00008967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8967 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3