Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc80ea1a485e633c…

MALICIOUS

PDF

82.8 KB Created: 2021-03-04 04:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f99f5f5d838b15bc9c4d4bd7cc2c02c1 SHA-1: 184f57a7c394a5e905bd93666e74f1fcd3302623 SHA-256: cc80ea1a485e633cf5e2fec13cd5b234e4efb2f36df252d0b6194869a7c8601f
186 Risk Score

Malware Insights

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

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 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/123?utm_term=a+streetcar+named+desire+setting+essay PDF link annotation
    • http://daating19.site/como_crear_una_macro_en_wordjfrp0.pdfIn PDF document text
    • http://verification-help.com/how_to_delete_rosetta_stone_account8oles.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/fhhVSmb/galaxy_shooter_games_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/jghbm3H/99020366942.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/agdie1n/14627866923.pdfIn PDF document text
    • http://medway24.com/nuzakogimedw3vdu.pdfIn PDF document text
    • http://pipvip.ru/buwulevaz8pn2.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/d6HEfBZ/47662809956.pdfIn PDF document text
    • https://gereveporona.weebly.com/uploads/1/3/0/7/130775593/nosigusejo_vaputogunewagof_meper_pezux.pdfIn PDF document text
    • https://cdn.sqhk.co/liregevo/STBielX/sonic_the_hedgehog_movie_wallpaper_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/gabamulijawe/aKvgHgc/17200307111.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/64zhcjg/xegideru.pdfIn PDF document text
    • http://eeeeeyyy.space/guvuparifojonekava1z60v.pdfIn PDF document text
    • https://norenepativen.weebly.com/uploads/1/3/4/3/134315866/7963df7.pdfIn PDF document text
    • http://prodson.space/twilight_new_moon_full_movie_hd_downloadobadn.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/iAiiSij/cooking_fever_game_hack.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/zevutebulaworel/algebra_1_equations_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/bikuwuzesirinepil.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/cycle_to_work_scheme_form_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/10807627623.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_off0000feb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB8 5320 bytes
SHA-256: c3273a9a1878f96d56b8ae74748e154e505e00c40204c328671c13dd5b5e6e5e
font_01_sfnt_off000110b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B7 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00011945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11945 10584 bytes
SHA-256: 9234123a1717858dfa1da9063b32e86fbb854e939ea9abcf38de05cea94abb01

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