Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c2ef7d46e1e06f…

MALICIOUS

PDF

74.4 KB Created: 2021-04-18 23:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a446a4ae9c537eb46c8a9298a79a7e2e SHA-1: 9f42b575e0291c684a5bee32ae9dee8eead2dcb8 SHA-256: f0c2ef7d46e1e06f5eac6ac42aef271cbbe0dbfb4afb814fa3dccb603085ac02
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous URLs, with one specifically pointing to a suspicious domain ('resalured.ru') and containing a product name ('beats by dre solo 3 rose gold') in the query string, suggesting a lure. The PDF structure also indicates it's a link farm on disposable hosting, further supporting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=beats+by+dre+solo+3+rose+gold PDF link annotation
    • http://vevovifox.scienceontheweb.net/how_to_have_boundaries_in_marriage.pdfIn PDF document text
    • http://sabovibin.medianewsonline.com/gafufenodevafum.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/que_es_la_afinidad_electronica.pdfIn PDF document text
    • https://cdn.sqhk.co/tizudukokeni/RwCKNge/dino_robot_battle_arena_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/fakujodi/j3PLOqe/kimiwi.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/anatomy_and_physiology_notes_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/gjj9D5J/ink_master_judges_chris_nunez.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/aBhiyid/15841133326.pdfIn PDF document text
    • http://golosa-spasibo.ru/how_to_turn_the_game_of_life_into_a_drinking_game27o3k.pdfIn PDF document text
    • http://storeyou.store/korurivipomiayq34.pdfIn PDF document text
    • http://xejelofewi.mygamesonline.org/xekupokar.pdfIn PDF document text
    • http://rigovutamejebum.iblogger.org/ek_chumma_video_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wemofisejaf/sigsZhj/coaching_center_mobile_and_backend_app_nulled.pdfIn PDF document text
    • http://wavolat.iblogger.org/jun_air_compressor_oil_data_sheet.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
    • http://defozuwonig.rf.gd/aitken_spence_plc_annual_report_2019.pdfIn PDF document text
    • http://sotexazonilot.rf.gd/chrome_browser_for_windows_7_free.pdfIn PDF document text
    • http://xiwezolemamu.rf.gd/xokesatejejojixozoze.pdfIn PDF document text
    • http://bodiluduf.rf.gd/wemowuno.pdfIn PDF document text
    • http://serozefa.epizy.com/wordpress_wp-admin_page_not_loading.pdfIn PDF document text
    • http://navizabopa.rf.gd/zusimolixilajo.pdfIn PDF document text
    • http://befadiw.rf.gd/43289675862.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_off0000d6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BC 5080 bytes
SHA-256: 77d91453d0634f2d4a93508b7c8efb89be5700b87a500d29af8723b0b110f3af
font_01_sfnt_off0000e819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE819 10716 bytes
SHA-256: 60ec5d2799ec75a4b898774ec3315854c58805e8fc49496757eda546840237c5
font_02_sfnt_off00010ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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