Malicious PDF — malware analysis report

Static analysis result for SHA-256 8215f04e80a74503…

MALICIOUS

PDF

75.7 KB Created: 2021-03-05 12:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 840b4a9ae1f795337a295710dc3ef655 SHA-1: db6cb8edd4d54b47e0e39c43a3eca4c0493561e0 SHA-256: 8215f04e80a74503b7a976335645239c29f8cb41e31b4b563ec23e71de265e35
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://baarspo.ru/123?utm_term=praxis+plt+7-12+practice+test PDF link annotation
    • http://iminn.ru/transformar_foto_en_caricatura_onlin5u715.pdfIn PDF document text
    • https://cdn.sqhk.co/guranotup/ygcLjcS/merriam_webster_dictionary_download_mac.pdfIn PDF document text
    • http://obschee.xyz/first_aid_usmle_step_2_cs_latest_edition47j3s.pdfIn PDF document text
    • http://duplicwcnj.space/992919245340q1ug.pdfIn PDF document text
    • http://goodnaturak.space/countif_less_than_google_sheetsxrx9p.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/jahhiiB/video_downloader_app_viral_mate_downloader.pdfIn PDF document text
    • https://cdn.sqhk.co/zesozote/ghbKgfl/order_of_battle_world_war_2_cheat.pdfIn PDF document text
    • http://maska-respirator.com/national_geographic_usa_july_2019b6pav.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/whirlpool_4.3_cu._ft._top_load_washer_reviews.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/befijazufekasesagajevo.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/dDcggRa/asteroid_passing_earth_today.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/HwgdBgi/zazakomijesewofesene.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/hjhf6pX/23081627003.pdfIn PDF document text
    • http://matrixbicycles.com/workouts_by_katya_week_4rg094.pdfIn PDF document text
    • http://neyroskakalka.site/gosowiradevolepou6175.pdfIn PDF document text
    • http://fijubigatusurov.scienceontheweb.net/jetovinesededubajupev.pdfIn PDF document text
    • http://robolab.one/20626261280n0ij9.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/6ifUoib/gameboy_advance_sp_for_sale_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/cggggie/vuwugoro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/40792197420.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/24833911150.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/84308752092.pdfIn PDF document text
    • http://fowimifefezujo.myartsonline.com/how_much_do_nurses_get_paid_in_chicago.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/any_website_video_er_chrome_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/binder_paper.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_off0000e95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95E 5292 bytes
SHA-256: 80a9a29962b497c562892505180164f0b65cb4dccf6294cf774980f55105a962
font_01_sfnt_off0000fb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB85 10928 bytes
SHA-256: 6f8fcdbe6cc2dca73c719fff6b193f8c0164264615e11df1b71020159105f576

Open this report in the interactive analyzer, or submit your own file for analysis.