Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6fc959ac7821c6…

MALICIOUS

PDF

36.3 KB Created: 2020-09-30 15:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1151e9dec785df08808da910456803a3 SHA-1: 2c19bccc0a9a5a84edca8389ce02ea9a3f91085f SHA-256: aa6fc959ac7821c6124f6c7bfa38a06b996c261a4999849dc890fb5de82b88b9
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://cctraff.ru/strik?keyword=business+communication+today+global+edition+pdf In PDF document text
    • http://zetesel.noticeeverytreetrades.com/uploads/1/3/0/7/130739415/6515942.pdfIn PDF document text
    • http://kerom.debbiemilnerlively.com/uploads/1/3/0/9/130968917/kireriluwowozo-temovovimujapo-vefedepubi-bufekinodefoja.pdfIn PDF document text
    • http://files.sibyllabrodzinsky.com/uploads/1/3/2/7/132741430/jamuvifiwone_kisotujejowona_wamapozobip_rofovifigafi.pdfIn PDF document text
    • http://dikiboki.clickclackfitness.com/uploads/1/3/1/8/131856772/d418269b.pdfIn PDF document text
    • https://site-1036632.mozfiles.com/files/1036632/63082965558.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/10335180839.pdfIn PDF document text
    • https://site-1038312.mozfiles.com/files/1038312/93074297307.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/91081564275.pdfIn PDF document text
    • https://site-1037145.mozfiles.com/files/1037145/poxegi.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/a90bd660-3df3-4ae1-968d-c7eeac4e9d05/vopelojubaganem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c08e43c-9b57-43b3-a947-8ba411801f2b/29346885161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/812d57f1-b3e9-4769-81c7-713c4a9c0813/tagumex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b154ee9-4343-4aee-b156-8f12d79359b4/97231870371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ac3c8da-a83d-4c0c-a963-3aec750cdccc/22302458551.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_off00004e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E77 5668 bytes
SHA-256: b0d698a174645905faab2df6c6bcd7293d18c3c49a7d08ab3ad547ff6d768693
font_01_sfnt_off000061bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 10420 bytes
SHA-256: 4cf6e5e00ebcb7cf27854eff5d88f5a61a5645788f9c37d7906595446a67da1b

Open this report in the interactive analyzer, or submit your own file for analysis.