Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff22030793992a5c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-17 11:33:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d999139ba280d1af752b31f518df67c2 SHA-1: 75745fd984f309c703f917e091039e686bafa272 SHA-256: ff22030793992a5c776ca77590668899a9384b633d0b36189dc1e5daf3cf7218
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=boston+mbta+greenbush+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402262/normal_60170e67e6b19.pdfIn PDF document text
    • http://sollabs.xyz/noguzesumnnpk8.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/gixegaxadunudazavapobispm495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420776/normal_5fe46b36f148a.pdfIn PDF document text
    • https://cdn.sqhk.co/rapaxino/hgYDOhd/90559040329.pdfIn PDF document text
    • http://madamzero.com/544328506490na2m.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/jddghOM/dragon_armor_models_1_35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409258/normal_6000209238999.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/gininefopiremadmhih.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/avg_free_antivirus_definition9xw9c.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/idjfqjd/67002069978.pdfIn PDF document text
    • http://price-list.moscow/pegosopajsw3n7.pdfIn PDF document text
    • http://social-whisper.ru/tamil_album_video_songs_2018_audiou809z.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/jupudizadid/94879730407.pdfIn PDF document text
    • http://puzasapexuwuju.epizy.com/miss_universe_question_and_answer_funny.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/lodepusitifejepo.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_off0000def2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF2 5544 bytes
SHA-256: fff0924a20b37995bc3ba60b0680f6dd46477e7961f14871fbbbd6ae37ac8797
font_01_sfnt_off0000f199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF199 11056 bytes
SHA-256: 7464cf4ca5b589099cadabc02881dab215116e2d2eb6741a3d0c8e4b8fd5a765