Malicious PDF — malware analysis report

Static analysis result for SHA-256 d442158a08bc1ffb…

MALICIOUS

PDF

111.1 KB Created: 2021-03-14 16:08:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc9ad6ad4ebaf9da05da190b7eb48c40 SHA-1: 773571df883e6aac3d5993a8337e0f6a1c53de64 SHA-256: d442158a08bc1ffbb7e82f4f7abf48e3d02a1c5dcaa6a5952f2772fc003b070d
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, suggesting an attempt to direct users to potentially malicious content or phishing sites. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://botokaw.ru/award?keyword=clement+of+alexandria+books+pdf PDF link annotation
    • https://cdn.sqhk.co/nububufi/egfvjjf/easy_money_play_game_earn_rewards_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/Bif9dwv/homeschool_connections_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/idqIX3W/tom_and_jerry_movie_2021_twitter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459025/normal_5fdfbb92a200e.pdfIn PDF document text
    • http://talemine.getenjoyment.net/how_much_is_a_rainbow_fish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_5fe10999ae973.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_60304379cac77.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/xilog.pdfIn PDF document text
    • https://fazerirusabutef.weebly.com/uploads/1/3/1/3/131381144/muvira.pdfIn PDF document text
    • https://talowitutujuf.weebly.com/uploads/1/3/3/9/133999148/zixupirumuzobunu.pdfIn PDF document text
    • http://rogosevit.22web.org/water_bottle_labels_sheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444852/normal_604daac0c9a53.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/zNifgcj/small_live_tabletop_christmas_tree.pdfIn PDF document text
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/5273286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426422/normal_5fddfb60492e4.pdfIn PDF document text
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/gukidamakelu.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/how_to_find_my_bosch_oven_model_number.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/iewddHQ/free_casino_games_slots_777.pdfIn PDF document text
    • https://penoruzeni.weebly.com/uploads/1/3/4/1/134132400/pofonigok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://supajiwa.myartsonline.com/merriam_webster_dictionary_free.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/54858819480.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/biblia_cristiana_dios_habla_hoy_gratis.pdfIn PDF document text
    • http://lumawasisoxo.rf.gd/xaputixuzozerofofi.pdfIn PDF document text
    • http://manosotidokef.myartsonline.com/14232588440.pdfIn PDF document text
    • http://pazabod.epizy.com/how_to_do_algorithmic_trading_in_india.pdfIn PDF document text
    • http://juruzozesema.epizy.com/digitization_ppt_templates.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B12 5364 bytes
SHA-256: a6b0e856f1a755ba6fa97409f67bb0c3019251094f607dd80cadc987d497254c
font_01_sfnt_off00017d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D36 16420 bytes
SHA-256: affb3a912df0f4eae20e6a49d031317d3d096a2ae46930ea8f40cd7b33e08996