Malicious PDF — malware analysis report

Static analysis result for SHA-256 8daa5cdcb6a0b21e…

MALICIOUS

PDF

191.7 KB Created: 2021-03-15 07:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69e42ee51f7ebacfbfcafc9ef6fc79c2 SHA-1: 23dc00e6617129d2a5e182dc5ffc49f956b6ac65 SHA-256: 8daa5cdcb6a0b21ea6ae2f3799b42a3bd140f40bcd3ea71737cda3ff86e9ec6c
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm on disposable hosting. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of many external links suggests an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://resalured.ru/123?utm_term=icc+full+form+in+law PDF link annotation
    • http://vujofinupapido.22web.org/athens_tour_map.pdfIn PDF document text
    • http://gadatoreneperil.mygamesonline.org/40342716996.pdfIn PDF document text
    • https://cdn.sqhk.co/xufuwejaxe/ghcrc6K/download_penaklukan_menara_tower_conquest_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/thf3Ujj/78135217238.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/RENcbsN/wetawasibimivobexobeg.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/jbjhkC0/darigitejikujibumus.pdfIn PDF document text
    • http://dezowem.medianewsonline.com/sql_tutorial_with_examples.pdfIn PDF document text
    • http://tusoret.22web.org/gatunalifafugapezo.pdfIn PDF document text
    • http://sezemowogoroz.iblogger.org/will_no_game_no_life_ever_get_a_season_2.pdfIn PDF document text
    • http://ruseseru.iblogger.org/bicycle_chain_size_guide.pdfIn PDF document text
    • http://jajegizu.iblogger.org/pokemon_go_guide_book_2020.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/xuwusojikafekiworelel.pdfIn PDF document text
    • https://denibemexe.weebly.com/uploads/1/3/4/5/134597338/8322492.pdfIn PDF document text
    • https://pagafika.weebly.com/uploads/1/3/5/3/135339488/joniwinekawose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bimejevitugera.epizy.com/xufopola.pdfIn PDF document text
    • http://nazowovemozugiv.myartsonline.com/45637712360.pdfIn PDF document text
    • http://vepisesilutez.epizy.com/31039226674.pdfIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_341e475319644bccab8abca2ad190491.pdf?index=trueIn PDF document text
    • https://3dd85f33-233b-4b3c-8e53-142bc8307eec.filesusr.com/ugd/8df890_3f29e3d484f64b6fa65505dfe655e28d.pdf?index=trueIn PDF document text
    • https://ef4b221f-cfb4-47e8-bf1d-3b5092770df7.filesusr.com/ugd/4948da_d1e7ccf14a1343a1b0f90cea1f2dd398.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29FE1 4876 bytes
SHA-256: c18707cf6844dde3bd8e274c1a1c5798e4810b6bb53adbc396568ec39fdea56d
font_01_sfnt_off0002b06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B06F 13660 bytes
SHA-256: 81b9611c42ce9dc01b76c85fdf6ea533be3b95dca188e7fa2a8fdf01984d3ffb
font_02_sfnt_off0002dbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBE7 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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