Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a680bf9e1d9f778…

MALICIOUS

PDF

81.6 KB Created: 2021-03-21 01:33:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7dcaa5a1f8b5f50bc89b06f1f76bab92 SHA-1: 716c6c38cfb7a8d41c4a007e821b6ecf6aa5433e SHA-256: 9a680bf9e1d9f778e82fa93b1b911f48a9c080bb0b69bca423f54986ceb3c49a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured to resemble phishing lures or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://jumiwimov.ru/123?utm_term=jj+heller+better+sheet+music PDF link annotation
    • http://tabikola.online/971722196589qcp8.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/vofakupotoxinawijajaxoxug.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/jofumunikefipinitubutige.pdfIn PDF document text
    • http://termo-nord.tech/photoshop_for_dummies_2019oej7v.pdfIn PDF document text
    • http://igclienteam.com/nazolovedarapaxisami7uc1b.pdfIn PDF document text
    • http://allwoman.site/chess_titans_3d_for_pc_free_downloadyr8bp.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/XWjihnl/70296394521.pdfIn PDF document text
    • http://degimogug.mypressonline.com/96927990487.pdfIn PDF document text
    • http://usecabinets.xyz/nizunewizagalivogowtwe.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/QMha7jj/live_cricket_match_video_world_cup_2019_hotstar.pdfIn PDF document text
    • https://cdn.sqhk.co/tixuniwe/CiaJ0MH/fm_scout_wonderkids_2019_download.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/62038645352ddpcf.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/gfYoLZv/biriwigetozadunefiweg.pdfIn PDF document text
    • https://cdn.sqhk.co/zenegiwowi/hfjhgUd/pocket_tanks_deluxe_play_online_free.pdfIn PDF document text
    • http://youralteragoods.com/angela_davis_quotes_on_capitalism05pxl.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/ibRyTje/vox_cinema_uae_coming_soon.pdfIn PDF document text
    • https://cdn.sqhk.co/texojijoraso/dWlhdih/64552354914.pdfIn PDF document text
    • https://cdn.sqhk.co/tesikotuk/he9iebo/rudobunavejidajaropus.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/iidibP6/kulaxupun.pdfIn PDF document text
    • http://mnclassis.org/kisurapexitekuiehiy.pdfIn PDF document text
    • http://theandyhong.com/2016_sonata_hybrid_maintenance_schedule8cq5s.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
    • https://s3.amazonaws.com/fomudebipefasu/formal_word_for_soft_skills.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/what_is_the_main_message_of_the_gospel.pdfIn PDF document text
    • http://givetupazowo.onlinewebshop.net/anemia_aplasica_causas.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/86124659271.pdfIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/can_be_used_to_communicate_with_satellites_brainly.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDED 4700 bytes
SHA-256: e39b9f330f5de27c69c4477436e78862e0d6058a5da12fa6190afc75823b7909
font_01_sfnt_off0000edeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEB 11004 bytes
SHA-256: f8e3d2e5876979ba359a93bd9edacd8308b0c6237c778372f2404e816e019793
font_02_sfnt_off00011370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11370 16168 bytes
SHA-256: 8c1e3298cb301b6aa2c2aeff0a89e1cafee6626e56d5ffa98ad52a7598c40df9
font_03_sfnt_off00012875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12875 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3