Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac193b96adfc7a46…

MALICIOUS

PDF

78.2 KB Created: 2021-02-11 01:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c1d2287bf61fcea98697791ad97a68b1 SHA-1: eb4a869676e5b76f31eb57104ad7bcc97f8483e7 SHA-256: ac193b96adfc7a46317ff0319a19c590c59d024856055d218aebc33d491ae80b
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains a high number of embedded URIs, with one notable URL being https://maypoin.ru/123?utm_term=edge+pro+apex+4+review, suggesting a phishing or malicious redirection attempt. The PDF structure and link farm behavior indicate it's designed to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=edge+pro+apex+4+review PDF link annotation
    • https://cdn.sqhk.co/tizalenifo/iedApxN/random_memes_meme_soundboard.pdfIn PDF document text
    • http://mevolufasizi.22web.org/89782607573.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/Ojeiggf/just_dance_apple_tv_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/gDChbhh/mivapuv.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/djjeFge/oscar_health_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/zJDj9hh/60533971364.pdfIn PDF document text
    • http://ropufogesuzazeg.iblogger.org/angel_of_death_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/ibhfjRP/66801624172.pdfIn PDF document text
    • http://fatimuze.22web.org/16833938629.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/haifyjd/rope_hero_vice_town_gameplay_online.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/e7iSQ4W/kupuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/uIgfBia/rorexume.pdfIn PDF document text
    • http://fasodotujane.iblogger.org/35920262740.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupisovid.epizy.com/mabab.pdfIn PDF document text
    • http://loxosufodu.epizy.com/cpa_cfe_report.pdfIn PDF document text
    • http://texigoxu.rf.gd/bloqueo_av_de_primer_grado_tratamiento.pdfIn PDF document text
    • http://lulevewutowa.epizy.com/xukuta.pdfIn PDF document text
    • http://pawulufotes.epizy.com/airworthiness_procedure_manual_chapter_3.pdfIn PDF document text
    • http://bixogonabu.epizy.com/jaani_dushman_old_movie_song.pdfIn PDF document text
    • http://gewuruso.epizy.com/8442781389.pdfIn PDF document text
    • http://buzuvemujogumob.epizy.com/gunuditip.pdfIn PDF document text
    • http://moxawaten.epizy.com/mifuxixigum.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/94646675416.pdfIn PDF document text
    • http://fotopokidag.epizy.com/samsung_androids_phones.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_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 5180 bytes
SHA-256: 10caedb7c5ce4736615ca9423f72a3c886fce5860ff04383374707f19d7137ad
font_01_sfnt_off0001074b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074B 10492 bytes
SHA-256: c0926ac7f4e045fe61f21ed6a9e61be3ab28d469a365c079bb4d01ac29217bdf

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