Malicious PDF — malware analysis report

Static analysis result for SHA-256 de05e844b883fa01…

MALICIOUS

PDF

71.4 KB Created: 2021-02-25 17:16:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f69671b3624a370ca9ca4dafd924bf06 SHA-1: 219ac45430e468ca586202e5aa2cb6ea04355a49 SHA-256: de05e844b883fa010b66c255168363952a90dd037e9f3994715e9f49c60bdfee
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://baarspo.ru/wix?keyword=age+of+war+3+hacked+arcade+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388178/normal_602e9edd62ddf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_601604a3df25d.pdfIn PDF document text
    • http://options.expert/best_first_person_shooter_2020_xboxcy33x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_5fd619c37ce7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_602a6cba32eb2.pdfIn PDF document text
    • http://ttop-shop.com/18456853376tqsbu.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/madden_15_xbox_one_controlstvuwm.pdfIn PDF document text
    • https://witomoniwitu.weebly.com/uploads/1/3/5/3/135317652/89d0a.pdfIn PDF document text
    • http://site-shop.xyz/naxikenewlxc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490515/normal_5ffe60f443688.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/88461657307.pdfIn PDF document text
    • http://pelewonaxiguso.epizy.com/arkham_horror_rules_cheat_sheet.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_off0000dab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB1 5712 bytes
SHA-256: b5cb6963218ad12ef2136e4d82c77d94933ab2cd8dcb928214fc134487c2f50a
font_01_sfnt_off0000ee0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0F 10156 bytes
SHA-256: 565dc92d108e934c21cd8e8fbb79c7101bdf7e784a0ea73f03116059c49e725e