Malicious PDF — malware analysis report

Static analysis result for SHA-256 15860656574bb495…

MALICIOUS

PDF

72.4 KB Created: 2021-03-10 05:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e49b5f1a7ca1d35db0d55d23f603cc40 SHA-1: f7b79fc5527e43b3882d2de6044d5574315852a9 SHA-256: 15860656574bb49537436328f8c9be0d503af1d2faaa73277df036617c6da6fe
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this, and the ML classifier and ClamAV detection confirm its malicious nature. The document body, though heavily obfuscated, contains text related to 'Pillars of eternity guidebook volume two', likely a lure to disguise the malicious intent.

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://fokemale.ru/strik?utm_term=pillars+of+eternity+guidebook+volume+two PDF link annotation
    • http://dozixolabizije.iblogger.org/logo_game_answers_level_24.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/9358023.pdfIn PDF document text
    • http://wimixolumow.iblogger.org/mipapowoza.pdfIn PDF document text
    • http://muwusus.iblogger.org/80048457510.pdfIn PDF document text
    • http://fevozogu.iblogger.org/agent_d_escale_aeroport_formation.pdfIn PDF document text
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/mexabila.pdfIn PDF document text
    • https://cdn.sqhk.co/gojapawareke/8hiiCge/wivuge.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/viwexakudodofu-gatiwov-boxil.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/Zhejh1v/today_cnn_news_about_ethiopia.pdfIn PDF document text
    • https://negijozizur.weebly.com/uploads/1/3/0/7/130775009/davewirinabibemi.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluniziwav/shhtgiP/download_tumblr_images_in_bulk.pdfIn PDF document text
    • https://cdn.sqhk.co/zabitokepum/jajegf4/gibevikopasegok.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/eMjjgcv/22620806290.pdfIn PDF document text
    • http://faxozulakevosos.iblogger.org/anari_1993_3gp_movie.pdfIn PDF document text
    • http://varuzajuv.22web.org/asphalt_8_android_file_size.pdfIn PDF document text
    • https://jubabanijawema.weebly.com/uploads/1/3/1/0/131070146/javutefebitir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fodapimogu.rf.gd/simple_present_tense_interrogative_form_examples.pdfIn PDF document text
    • http://jibefemojus.epizy.com/chauvet_slimpar_56_color_chart.pdfIn PDF document text
    • http://lozebaloporan.epizy.com/midsize_suv_ratings_2018_consumer_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1bc16ed-3e79-45ea-95cf-7b8eacffacd3/toto_toilet_seat_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35b5174-c70b-4c03-b225-4b88692ded59/charisma_on_command_book_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30300387-c3bc-46e9-9aae-fd8787d65180/xiset.pdfIn PDF document text
    • http://laxonuzuw.epizy.com/alan_watts_chillstep_mix_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/366e758a-3e3e-48af-9c1c-50c0cd7aba1b/nutrition_facts_sonic_oreo_blast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d215b2c3-68e7-442c-8f22-6a3c619e0082/tom_clancys_jack_ryan_series_1.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_off0000dac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 5684 bytes
SHA-256: 95351a3dd8eb3bdde07a8283417ab0b613006942a0fca0a9fd5e42ac47a211e2
font_01_sfnt_off0000ee2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2A 11176 bytes
SHA-256: 9e6d6f912544862b57cd5b94333659309c72600ad90c9e61abe391763b43f17a