Malicious PDF — malware analysis report

Static analysis result for SHA-256 98bb0e913f703a9a…

MALICIOUS

PDF

66.6 KB Created: 2021-05-10 22:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d78b4d5b65b38eb63d709db080bb0fe0 SHA-1: cb0de8c9b0439a1c86a166898fa79d8a5b2d10eb SHA-256: 98bb0e913f703a9a125c411f17572e62d407e348c40609e2274a81c8f801e7b2
126 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document body, though partially corrupted, suggests a lure related to hardware repair, directing users to a link farm hosted on disposable domains. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or spamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=how+to+replace+jbl+flip+3+charging+port PDF link annotation
    • http://zanatax.22web.org/gemejusuxizaramutevu.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/jgihbz7/wolf_girl_and_black_prince_anime_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/Hgdijqr/tripadvisor_cuba_resorts.pdfIn PDF document text
    • https://cdn.sqhk.co/mofekuma/bRIigjd/50148626293.pdfIn PDF document text
    • https://cdn.sqhk.co/gevagedubop/jMcjc7y/total_war_thrones_of_britannia_gameplay_ita.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/bzxdghs/voice_changer_for_zoom_chromebook.pdfIn PDF document text
    • https://cdn.sqhk.co/zawileveruz/wjitqk6/71611891195.pdfIn PDF document text
    • https://cdn.sqhk.co/kebokeregim/qPhdJIZ/super_mario_2_egg_shooter.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/1ghwxPh/kevobawolatilorofowiza.pdfIn PDF document text
    • http://dukuwik.22web.org/gutajod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/storm_spirit_guide_reddit.pdfIn PDF document text
    • http://xowiweruxuz.epizy.com/descargar_biblia_reina_valera_1960_para_celular_gratis.pdfIn PDF document text
    • http://pixuxurarosu.epizy.com/assessing_student_learning_outcomes.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/are_mitsubishi_eclipse_cross_reliable.pdfIn PDF document text
    • http://lowadof.epizy.com/penguin_readers_level_2_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/service_level_agreement_format_india.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/florida_home_rental_agreement_template.pdfIn PDF document text
    • http://jududupozibuj.rf.gd/45080433403.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/kivoxodinafuwujuwos.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F7 5532 bytes
SHA-256: c155af082daef7e46a2b7ba101fc240b2cd7d0b401c6d235847a398444f1b978
font_01_sfnt_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 10484 bytes
SHA-256: 3965be87ab57f2779d7395adc9a325c845f20424bb2221121b96c289b45c4ab7

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