Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5376ff410a325f0…

MALICIOUS

PDF

96.9 KB Created: 2021-04-02 12:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ce276dc88957099ebb73b1f8c837f8c6 SHA-1: d5ebc60f46011e98309f59c64873494542d4800a SHA-256: b5376ff410a325f01a2b97f8861757c7e79618ad437b638033d2b72fdc330358
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords that suggest a search result lure, directing users to the identified malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/wix?keyword=aquaclear+contacts+walmart PDF link annotation
    • https://cdn.sqhk.co/gopuxipo/gdhg7H4/cute_animals_wastickerapps._com.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/crIggr0/petit_paris_warszawa.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/hgGjeED/96606296301.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/4LngiJ5/kovenedudumelez.pdfIn PDF document text
    • http://kawlites.online/forgotten_realms_5e_booksd5v3x.pdfIn PDF document text
    • http://online-sistem.site/705613370079v7kq.pdfIn PDF document text
    • https://cdn.sqhk.co/fowifabibu/oLqhiji/81536006353.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/h0hUq4g/most_amazing_viral_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/hhiazic/tomatavexuvafezizagora.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/f0kjbgf/how_to_create_3d_block_letters_in_illustrator.pdfIn PDF document text
    • http://clubstore.info/amc_10_12_practice_testsp7hgu.pdfIn PDF document text
    • http://businesslinecenter.com/duripemicl67i.pdfIn PDF document text
    • http://alesyasemiletova.com/kadowegekegewemug17oik.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/ajeM8SZ/stickman_downhill_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mexowotevofo.rf.gd/4934617260.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/32891667237.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/hp_color_laserjet_cp1215_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/how_to_connect_jbl_flip_3_bluetooth_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/craftsman_laser_trac_compound_miter_saw.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/mainsheet_rope_type.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/nireluj.pdfIn PDF document text
    • http://rinexevijexaxi.epizy.com/beretta_92fs_compact_stainless_review.pdfIn PDF document text
    • http://pexaniruvuwuwe.rf.gd/hingham_journal_police_report.pdfIn PDF document text
    • http://weketabafizevu.epizy.com/76136507748.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/the_maze_runner_series_ending.pdfIn PDF document text
    • http://lulevewutowa.epizy.com/xukuta.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_off00013bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BAE 5152 bytes
SHA-256: 83893ca8b24c9719a1e91c18fc4c6dbb208223363c37ef81034fef17054baa6a
font_01_sfnt_off00014d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D31 12056 bytes
SHA-256: d187e8073fa38c129994be3f249878cfc4d4ac89af5c3024b4967331a35e9aef

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