Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ec7b82130a154b…

MALICIOUS

PDF

48.6 KB Created: 2020-10-16 03:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 3e5688dd1b1d9f3cadf6b3446158026a SHA-1: 3355004211a04864d539b0c59fe70880da81fb7c SHA-256: 75ec7b82130a154b079f40f65ce6003bba2cf0c44ca4437f7f34a1781c82f514
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/pify?keyword=lifestraw+bottle+cleaning+instructions In PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/zapanexise.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/7453400.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/miwuxelo-kikukiroli-vitijataw.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/dozelojukazeni.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/5740840.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/204d82.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/7462529.pdfIn PDF document text
    • https://site-1042607.mozfiles.com/files/1042607/importance_of_aquatic_ecosystem.pdfIn PDF document text
    • https://site-1041498.mozfiles.com/files/1041498/wolawiwuposunek.pdfIn PDF document text
    • https://site-1040213.mozfiles.com/files/1040213/relapse_prevention_cbt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5f88100e8682a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f887b5ec9efa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f883ed91566b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368950/normal_5f88965af1776.pdfIn PDF document text
    • https://site-1043582.mozfiles.com/files/1043582/vufeso.pdfIn PDF document text
    • https://site-1043445.mozfiles.com/files/1043445/91214626221.pdfIn PDF document text
    • https://site-1048482.mozfiles.com/files/1048482/42035511477.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://cdn.shopify.com/s/files/1/0486/0778/9221/files/susufagaxuzogu.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_off00006fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB3 5104 bytes
SHA-256: e6bd314c47a39de58c4bc64f1054d96dc995db117f14e87c37e8654f03401778
font_01_sfnt_off00008131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 10564 bytes
SHA-256: e3d55ff36846aa794a30d1627e66988ca50962e3f016c98eee4c6d2651937630
font_02_sfnt_off0000a528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA528 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3