Malicious PDF — malware analysis report

Static analysis result for SHA-256 c264fcdc1a09b161…

MALICIOUS

PDF

74.8 KB Created: 2021-05-19 06:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: abc36f66eee4a7062e05e2fd1fe7a771 SHA-1: ca536709787d4207e91319169e00b02cb74699e1 SHA-256: c264fcdc1a09b161684df1fade91120e80ae855e05b4bc2b97e51790f213a1e1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, references "Gta 5 online money hack ps4 2019", indicating a lure to entice users to click on the malicious links. The presence of numerous external URIs suggests an attempt to redirect the user to a site hosting further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dugedepap.ru/strik?utm_term=gta+5+online+money+hack+ps4+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389353/normal_603ceec1ab082.pdfIn PDF document text
    • https://nonuvatemex.weebly.com/uploads/1/3/4/4/134443968/5296188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_5fd8e8886c865.pdfIn PDF document text
    • https://vurineju.weebly.com/uploads/1/3/2/7/132741272/fd01d89ab3a163d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469626/normal_60290c00ee64c.pdfIn PDF document text
    • https://jigurojo.weebly.com/uploads/1/3/5/3/135321607/gofigobize.pdfIn PDF document text
    • https://gadudomarun.weebly.com/uploads/1/3/4/7/134705140/takakikerix_lemegufedexew_daxugig_xenotedilebibub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449187/normal_5fe28dfe890c5.pdfIn PDF document text
    • http://popubim.iblogger.org/wuzikuvazotiru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5ff55ddc0e939.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384160/normal_6004b42f45834.pdfIn PDF document text
    • https://lilususuki.weebly.com/uploads/1/3/4/3/134317990/5761493.pdfIn PDF document text
    • https://somirurawepaf.weebly.com/uploads/1/3/1/3/131381963/gofifo.pdfIn PDF document text
    • https://dasiwijumajofep.weebly.com/uploads/1/3/0/7/130739595/vozakopunub_redobotud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jonufinufezo.epizy.com/dieta_cetogenica_alimentos.pdfIn PDF document text
    • http://moraruvotu.epizy.com/nutone_intercom_customer_service.pdfIn PDF document text
    • http://mulukamuzadesew.epizy.com/how_to_register_late_for_sat_subject_test.pdfIn PDF document text
    • http://pugetuwozijeso.rf.gd/2311967363.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 5968 bytes
SHA-256: ba83030d6ac6a0d034baabf569a10fba24320eb294811bfadb25e44509a88fab
font_01_sfnt_off0000fb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB14 10204 bytes
SHA-256: 44bb4c0ad770c5ab839e2b152e9383396b9a43cb41c03c7e1350664e046eb2b3

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