Malicious PDF — malware analysis report

Static analysis result for SHA-256 576c74c1ef0b5c54…

MALICIOUS

PDF

82.5 KB Created: 2021-05-01 18:35:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dbb7dcda19c7945ed54b556e392c8592 SHA-1: 981fa7391261062cc6830e2c14acceee3a93a32b SHA-256: 576c74c1ef0b5c54b994e7caf653fa94db08587905ead9d872bcc27c5f58e925
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://lozipotod.ru/strik?utm_term=sony+str-k670p+price PDF link annotation
    • http://rowaxamapitowej.getenjoyment.net/fundamentals_of_database_systems_7th_edition_solution_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/g1KKidz/fall_guys_xbox_game_code.pdfIn PDF document text
    • http://debodopox.iblogger.org/doveladojeruteloni.pdfIn PDF document text
    • http://potavot.22web.org/accommodation_vocabulary.pdfIn PDF document text
    • http://tamogulaganero.scienceontheweb.net/bupewirufizogelupo.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/ziratelututuvebawe.pdfIn PDF document text
    • http://kemikavar.mypressonline.com/12856808833.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/does_juice_plus_tablets_make_you_lose_weight.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/f6Wujif/boat_wallpaper_for_mobile_home_screen.pdfIn PDF document text
    • http://milesatel.mygamesonline.org/applications_of_blockchain_technology.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/i7ogc4l/nepelejoz.pdfIn PDF document text
    • https://cdn.sqhk.co/gitogozune/boThedE/turbo_drift_3d_car_racing_apk_mod.pdfIn PDF document text
    • http://wudenufodoroziv.scienceontheweb.net/71612087629.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://uploads.strikinglycdn.com/files/f26ab747-b29b-4e10-b714-b54f278631e4/how_to_fix_a_hitachi_tv_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/android_name_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/57152020475.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/adventist_acapella_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17db2044-22ba-4173-bf58-1b8267dcd140/tifukebunazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af913b63-24ee-4479-b27e-c251b79fa9a9/texas_health_and_safety_code_573.021.pdfIn PDF document text
    • http://firiwigisu.atwebpages.com/mojezoxesudumuzufib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/865b871f-e1c0-4472-9319-7e23c30b0a20/is_girlboss_going_to_have_a_season_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dbf00d0-d88b-44cf-8572-04c132dfa351/snapper_28_hi_vac_belt_replacement.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/lebinagafijajupimut.pdfIn PDF document text
    • http://tunojaw.rf.gd/dimepezexerepopuxofi.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_off0000f304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 5152 bytes
SHA-256: 40582c19961e3965efd6a0a60a4aed786eb93a4e0c28a866307b5c4466298538
font_01_sfnt_off000104a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A2 12296 bytes
SHA-256: 1dfb1daabec13a27bd510ddf941a9e051273fbe43e6b159aa0788ebd0eb6a07d
font_02_sfnt_off00012e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E33 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34