Malicious PDF — malware analysis report

Static analysis result for SHA-256 8196f80773bd05ea…

MALICIOUS

PDF

80.7 KB Created: 2021-04-16 20:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7244f4947fb4044ff9c9fab956c89d73 SHA-1: c0a8b09b1a0129cceb8edd70cec2cbf7b4dfcd77 SHA-256: 8196f80773bd05ead9f4741c05eb96a97ccaadfe287a2714c56443bfa2cf34b6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/strik?utm_term=how+to+describe+a+graph PDF link annotation
    • https://cdn.sqhk.co/rapekerokemo/gdid6jc/fufefujebikekono.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/giagxih/wiraxusogafufogasajonit.pdfIn PDF document text
    • https://cdn.sqhk.co/pexejaxer/YG0GY0M/57427662607.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/hiiagcC/wunuduginafube.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/idijVX6/zoderaluxed.pdfIn PDF document text
    • http://kegawati.iblogger.org/sewus.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/giclqjh/53119115751.pdfIn PDF document text
    • https://cdn.sqhk.co/dipewoduge/K7ddhbf/67595130228.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/hSYqyji/58468332826.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/gg3C5gh/country_music_charts_august_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/b1gjtZy/bowling_crew_3d_bowling_game_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/BKBVhjE/my_city_dre_island_lyrics.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
    • http://werujutiweponig.rf.gd/wildgame_innovations_wraith_16_lightsout_game_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/love_boat_theme_sheet_music.pdfIn PDF document text
    • http://zatajuvezutulo.rf.gd/32678242102.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/29861894494.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/gasuzegibikapejazal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc89ea4b-77de-43dd-ba91-8873cf8956c5/smart_goals_google_sheet_template.pdfIn PDF document text
    • http://dikiboxexoginag.epizy.com/how_to_inflate_a_hill_rom_bed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51d7e3b8-dd0a-452e-8216-a280cc70f192/clasificacion_del_derecho_privado_y_publico.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/furofiduxupo.pdfIn PDF document text
    • http://kezadovimitaw.rf.gd/visual_studio_code_php_formatter.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA2 5176 bytes
SHA-256: 9855aa819bc2708bc7d4fa3a29cb8cf807713cbd927b9d029823e0a0b0b1465d
font_01_sfnt_off0001015f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015F 10624 bytes
SHA-256: 1864b0895631f87d22537926421f774e2af618a9c188d6401fd3dc698b898d53
font_02_sfnt_off000125cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125CB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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