Malicious PDF — malware analysis report

Static analysis result for SHA-256 563e79353400fcdb…

MALICIOUS

PDF

89.8 KB Created: 2021-03-10 17:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ef40e367b3ad503be8f42f4bc8e6ee0a SHA-1: 2844f0adb598774ba6dd319bd95e676ba590023c SHA-256: 563e79353400fcdbf1addd5cce12fef2c71a3e628865a4e881a8c3f812700571
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a deliberate attempt to create a network of links, likely to direct users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/123?utm_term=manabadi+ap+grama+sachivalayam+hall-+ticket++process PDF link annotation
    • http://covid-19online.site/como_fazer_assinatura_digital_em_documentou8bti.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/Ithhham/neo_geo_emulator_plus_roms.pdfIn PDF document text
    • https://cdn.sqhk.co/kitatoze/ikwiLgc/space_bricks_breaker_puzzle_cheat.pdfIn PDF document text
    • http://com-connexion.xyz/vupaxofawedabuduloselepu9bo.pdfIn PDF document text
    • https://cdn.sqhk.co/reditifotep/9gfijgj/bitisadal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_60132b015be2c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368244/normal_600070a71d4cc.pdfIn PDF document text
    • https://cdn.sqhk.co/xeviremal/gighzhe/abc_song_in_spanish_military_style.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/fortnite_aimbot_pc_no_survey.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/ghVOZgf/18653898790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_601b74f8c02de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_603259bf16df3.pdfIn PDF document text
    • http://storeeuro.info/il_ritratto_di_dorian_gray_film_2009_streaming_itaiph3t.pdfIn PDF document text
    • https://cdn.sqhk.co/furaxofir/VhgYkk6/bakipovifujufubo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_6028e6ece19cd.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/jacoco_report-_aggregate_0_coverage.pdfIn PDF document text
    • http://aarbuz.space/enlightened_journey_osrs_quick_guidez0ooo.pdfIn PDF document text
    • https://cdn.sqhk.co/vudupapuj/XOLUYgd/street_fighter_iv_champion_edition_pc_download.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_6f88ada2166748bdb775e0e01d33c8db.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_291b59377178419b82cae8161fe6abbd.pdf?index=trueIn PDF document text
    • https://9ec55029-67b1-4fe0-9a5d-40fd638ac594.filesusr.com/ugd/dc5a51_67b539ad842141d99d888ddb0e5e87d0.pdf?index=trueIn 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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001026d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1026D 16148 bytes
SHA-256: 3382175a0cd51a0eaaaa35f66f89886d70db0d0e909eb90bf7118a8dbe0286dc
font_00_sfnt_off0000ee75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE75 5888 bytes
SHA-256: 26fc7d4cbea5c560f6bb2a0d8f19f355ec46061f2107fc4eaee1f5448b5ac76b
font_02_sfnt_off00012e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E9F 12696 bytes
SHA-256: 0e42db90e12bd3d7e63caab102bf1d3b51b1b0a47bd2e01d639c7b3e9f3bb838