Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a6242264dd1497…

MALICIOUS

PDF

78.0 KB Created: 2021-03-17 08:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d72e7354611b4949291362ce5dec562a SHA-1: b638c086dabf75b03f747e9ca972281f2fe6d88b SHA-256: 56a6242264dd149768d3acf2b05ce485d557a2074963949bcf5950f644138f78
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and phishing-related. It contains numerous external URIs, with one prominent URL pointing to a site offering 'autocad 2009 crack file free', indicating a lure for pirated software. The PDF's structure and embedded links suggest it functions as a link farm designed to redirect users to potentially malicious or unwanted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/123?utm_term=autocad+2009+crack+file+free PDF link annotation
    • http://tamasolesodaj.mypressonline.com/5166947921.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/f1cc97320f.pdfIn PDF document text
    • http://tryadasert.online/ted_danson_young_cheers14ikr.pdfIn PDF document text
    • http://wiinorama.space/harman_advance_pellet_stove_partswt2uz.pdfIn PDF document text
    • https://cdn.sqhk.co/leguzufaju/bVlhfhg/real_car_parking_simulator_car_driving_academy_games.pdfIn PDF document text
    • http://ejinaya.com/atari_7800_emulator_apktajtl.pdfIn PDF document text
    • http://topstop.site/29272329821d55cv.pdfIn PDF document text
    • http://viewcreditscore.info/52507672174nxdxo.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/gwjaihj/auto_auctions_in_alberta_canada.pdfIn PDF document text
    • http://fb-ig-violation.com/kisizilekanizjmggq.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekasip/hQwmhi3/nakozalitivijesenekuz.pdfIn PDF document text
    • http://sodahub.club/137118941331v4mz.pdfIn PDF document text
    • http://uscarinsurance.info/12283711174eccc6.pdfIn PDF document text
    • https://rexaririwe.weebly.com/uploads/1/3/1/6/131637114/pelava.pdfIn PDF document text
    • https://cdn.sqhk.co/duxisabaza/jaDgiii/group_counseling_skills_and_techniques.pdfIn PDF document text
    • http://redirunna.xyz/bepiputarn73u.pdfIn PDF document text
    • http://nawavidosuk.medianewsonline.com/debussy_arabesque_sheet_music.pdfIn PDF document text
    • http://rmk4sale.xyz/gofejikxeyte.pdfIn PDF document text
    • http://silvanozito.online/domesatavoxekuraguradkuuq5.pdfIn PDF document text
    • http://hotel-engels.ru/vazulerujakoxavujaqeiix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/ant_colony_optimization_tutorial.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/how_to_clean_a_aroma_rice_cooker.pdfIn PDF document text
    • http://medazupu.onlinewebshop.net/angela_davis_livros_em.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE811 2868 bytes
SHA-256: ef0ff104ea44b4f76f2e317c05d944ff73adab4e11d451763276b796cfc564ed
font_01_sfnt_off0000f243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF243 5320 bytes
SHA-256: d509ae6a4d25cd9d7f9a6ef9262d182761f5370000bb9413ac5393f4816a3ef8
font_02_sfnt_off00010471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10471 11096 bytes
SHA-256: 3bf74b367179311b2396825d4719c786950e10e663ffc6ab5200f00b62270b51

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