Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5c75c8dffefbcf…

MALICIOUS

PDF

64.2 KB Created: 2021-01-29 13:11:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dd4a5457c9d655b7dc9f4fb0968f9d8e SHA-1: 8aea40d8187e3ff0194a657d6232153e7aa95f21 SHA-256: 6d5c75c8dffefbcf0e3d90594bc470696a3f6d24965ef19ec483081cd9d5bfc2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many pointing to disposable hosting, and is identified as a link farm. The embedded content, though heavily obfuscated, suggests an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/wb?keyword=purple%20glitter%20makeup%20girl%20meme PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481667/normal_6004be721e811.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/DgjWnZU/domino_s_pizza_w._republic_rd.pdfIn PDF document text
    • http://trendmobile.ru/golden_psp_emulator_pro_apkogpnb.pdfIn PDF document text
    • http://daliadiago.com/65594161022b1l4t.pdfIn PDF document text
    • http://bupro.asia/xigikavuvutotawuzibimxzbq.pdfIn PDF document text
    • http://ygrash.website/52023854832tu8b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409103/normal_5ffc792daa9e4.pdfIn PDF document text
    • http://podcard2020.site/mecano_grandes_exitos_descargar_megadhmcu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484364/normal_5fda798058ca2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490122/normal_5fda86d07d115.pdfIn PDF document text
    • http://kigurumi.org/bloomberg_new_energy_outlook15qae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/57054131725.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_off0000c078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC078 5024 bytes
SHA-256: 40c9986edf0ba2901f17dc513e1936007874ac9523906971fa5ddd060cf52ce4
font_01_sfnt_off0000d17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17B 10344 bytes
SHA-256: 348e849fa48616ff47ea9509629a9cd172cc7b9d53429d7034890b10085864ab

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