Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a27201d8792c8f…

MALICIOUS

PDF

74.8 KB Created: 2021-05-07 03:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0149d5707ff75a5bfb7d3bf98c384f13 SHA-1: 916df6e2503666d4d5db845b1f986b414c83671f SHA-256: 67a27201d8792c8fd73dcadd65c791a509b6f209d0b99cf6e01f626cc6b100bf
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable hosting and redirectors, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links. No scripts were extracted, but the PDF structure itself is weaponized to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://druttle.ru/strik?utm_term=wagner+airless+paint+sprayer+lowes PDF link annotation
    • http://help-bluebadgecustomer.com/can_you_put_soup_mix_in_slow_cookernnh3j.pdfIn PDF document text
    • http://cleaner-inn.club/auxiliares_de_comercio_costa_ricag5vhc.pdfIn PDF document text
    • http://senenetikoxikom.22web.org/dibigipi.pdfIn PDF document text
    • http://kavuxusexilu.22web.org/can_you_solve_my_problems_alex_bellos_free_download.pdfIn PDF document text
    • http://jokebixa.22web.org/80383538628.pdfIn PDF document text
    • http://prodson.fun/baxikzlto9.pdfIn PDF document text
    • http://hookup757.fun/24949838911jtr99.pdfIn PDF document text
    • http://vidclips.design/the_secret_law_of_attraction_full_movie_free_downloadr2ilh.pdfIn PDF document text
    • http://kpupnov.pro/plantronics_s12_replacement_ear_cushiony1zkz.pdfIn PDF document text
    • http://berkeciftci.net/tamivelegiliti3wx.pdfIn PDF document text
    • http://ulekschool.online/fuji_finepix_s8600_digital_cameraorone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_7c8d0ade6d6549d98a1adbc379a3c32c.pdf?index=trueIn PDF document text
    • https://70010cfe-69b1-4fe9-a336-bdfe2418dc1e.filesusr.com/ugd/f1d680_2f957d04d74647c0a24d3beb70052cd3.pdf?index=trueIn PDF document text
    • http://lamafuravufezin.epizy.com/65966301654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e51acdb4-0329-48ea-8815-1d5dc8967787/bissell_powerforce_helix_turbo_rewind_vacuum_cleaner_2261_e_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5644da6-e23a-49d6-b707-9ab079544e65/bifategaxanoxafupodeno.pdfIn PDF document text
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_a043b5464b6a4e74a8e6b1203a358d62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/df137112-0801-486b-ab30-a023f1fd6a1a/how_to_install_hp_envy_5530_printer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d9ac84e-5e11-4409-a5e4-1ae535b9acf4/planeacion_estrategica_de_una_empresa_pasos.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_off0000e787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE787 5196 bytes
SHA-256: 4893104273ef859e608147df62aaf2d4a29fddc81eef7d500b0b5128e27dcb4a
font_01_sfnt_off0000f963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF963 10888 bytes
SHA-256: c5c124545f9dd8460531209d13c310c29be68d77e5ae1021e24e822a776fce65

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