Malicious PDF — malware analysis report

Static analysis result for SHA-256 d782e8d070aeac6d…

MALICIOUS

PDF

154.1 KB Created: 2021-04-29 03:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 251bf36e0503ee4965d801e60fa5aaf8 SHA-1: 812c831b6344100319cbc59b63c06f95786b7b54 SHA-256: d782e8d070aeac6ddbaffcded923372e0df8e43f1e0d2f20232a170f24aa161b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL seemingly related to 'Crossfit hero wods list pdf', likely a lure to disguise malicious intent. The ML classifier and ClamAV detection strongly indicate this PDF is malicious, likely a phishing or trojan delivery mechanism. While no scripts were explicitly extracted, the presence of external URIs suggests the potential for downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=crossfit+hero+wods+list+pdf
    • https://cdn.sqhk.co/wixedineve/2ZqTigF/gta_vice_city_game_cheat_keyboard.pdf
    • http://lavka-karamel.ru/371743900209spn5.pdf
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/fojuweriziwugorek.pdf
    • https://cdn.sqhk.co/fosigigamef/0KhgSU9/interesting_facts_about_world_war_2_weapons.pdf
    • https://cdn.sqhk.co/wapogade/3Ggcghu/71129176696.pdf
    • https://cdn.sqhk.co/gogadibavuta/dciahdG/217425951.pdf
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/3be0bbae37c4cd6.pdf
    • http://kasyanbeauty.com/kendo_spreadsheet_custom_toolbarvkivh.pdf
    • https://mojabizozawobe.weebly.com/uploads/1/3/4/6/134699592/pisifuwi.pdf
    • http://deutschebank-meine.com/number_conversion_binary_decimal_octal_hexadecimalayns5.pdf
    • http://parhelifrl.space/5895971442b4tc8.pdf
    • https://cdn.sqhk.co/fapolokid/hbijjfC/81414836543.pdf
    • https://polavimiwusirew.weebly.com/uploads/1/3/2/6/132681763/f8cff.pdf
    • https://cdn.sqhk.co/lijumifi/5hi0Vgf/smc_pneumatic_cylinder.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1138278f-e8d0-45ef-aef3-dbdd7428ac52.filesusr.com/ugd/5be868_951ae8a44df3409ca08d0a58a1db7a45.pdf?index=true
    • https://s3.amazonaws.com/xepululejiwof/why_does_my_samsung_refrigerator_ice_maker_keep_freezing_up.pdf
    • https://s3.amazonaws.com/jexijer/99246826668.pdf
    • https://s3.amazonaws.com/dezajok/river_flows_in_you_easy_piano_free.pdf
    • https://db532842-334f-4efb-8993-e67ec8f20ff5.filesusr.com/ugd/bc5be3_d23a816cbfd34580839d087cb38592ad.pdf?index=true
    • https://s3.amazonaws.com/tolivajupeku/wudilijitofop.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000223ce.bin
904963623f572ff06ae5505b94064e5b1547f9dce1699bee62bfa89635f76a42
pdf-font-stream PDF embedded font (sfnt) at offset 0x223CE 4916 bytes
font_01_sfnt_off00023490.bin
511436907273dfc7540203cbb15dba8957ce2dfec699be09d9b1651013df3c2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x23490 11632 bytes