Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0ffc5925704bce…

MALICIOUS

PDF

86.0 KB Created: 2021-03-05 13:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6951c8a1fe41c49d4e5a802659363be3 SHA-1: 06c1895d252076cfe5c0e03e1297750717fbb66d SHA-256: 6b0ffc5925704bce3a5f08fe9530b3537d04c548c4efd811f69844cff7c2494c
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'jacksth.ru/award' suggests a phishing or scam attempt, likely disguised as a prize or award related to a product search. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/award?keyword=lg+cosmos+3+vn251s PDF link annotation
    • https://cdn.sqhk.co/sileluzorupo/ajjiaAn/word_finder_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/Sghrigj/18657919583.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/fDsjfge/run_rabbit_run_100_elevation_gain.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/hajjEjd/bouncy_ball_games.pdfIn PDF document text
    • https://cdn.sqhk.co/ninuxoti/sjdAIif/extreme_bike_games.pdfIn PDF document text
    • https://cdn.sqhk.co/wanaxowuwot/2agjtih/galaxy_emoji_cute_wallpapers.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/Gift5hb/kosewobefazusiwafi.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/Xgggejc/software_update_iphone_6s_not_working.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/how_to_cut_hair_with_wahl_clippers_at_home.pdfIn PDF document text
    • https://cdn.sqhk.co/dokamaruxif/f8jcAhg/63870306647.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/iajc8gf/the_walking_dead_filming_schedule_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/ihHkiHH/14830448971.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/ijoHgm5/36891144061.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/irjbxqv/swamp_thing_2020.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/stairway_to_heaven_lyrics_satanic_meaning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a051729e-54e7-4dcd-8f37-4a7a0dee5642/tabla_periodica_grupos_periodos_y_familias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2c46b0-6fcb-4717-a0ab-59c7bf9eb372/77012441615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f4d260f-274c-4402-b583-7348620ee741/28771146588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f667f31-b652-451e-8773-99282361718f/tekamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a20eaec-ad2c-4357-a550-9c6041224a63/50592514011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed78eae-74a0-4c92-a63f-2ee17728b4a1/84077137920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4801c96b-c5f7-4a1c-9044-82098fd6f6c1/how_to_use_healthmateforever_tens_unit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10867 4796 bytes
SHA-256: e52fc178c9527e1ca9b36f041988dce35482066735b71b9407b21aa5ca1f85bf
font_01_sfnt_off0001189e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189E 10452 bytes
SHA-256: b2a91a8d5d1163894fc518d8e978fbcf70b897fc6340cafecbb2085666ca2df3
font_02_sfnt_off00013c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C83 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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