Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b13e9369abf1da4…

MALICIOUS

PDF

72.9 KB Created: 2021-02-18 05:19:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fa19eaab42a6c475b09292b229dc0ee7 SHA-1: 559d6f2c693afa0b858109fda191bb0c584d8a68 SHA-256: 5b13e9369abf1da4989a6630ce9d73049eb19132c685f3e42b517bd91974e6b9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/aws?utm_term=one+of+us+is+lying+tv+show+age+rating In PDF document text
    • http://file-id.ru/aces_high_march_sheet_musicbhcm0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_602be979e8dcf.pdfIn PDF document text
    • http://rajenajodaf.iblogger.org/finifokukinesitukuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388293/normal_5fc5c030c8129.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_6009c898d50ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484169/normal_602a22c145396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476127/normal_5fe7da136487f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477183/normal_5fe0b4a281197.pdfIn PDF document text
    • http://igafnd.org/toca_hair_salon_3_apk_za_darmo_ios48br8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_601956c930336.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451363/normal_600d25df84a61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_600a942844795.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xujogefup.rf.gd/xakujixafufo.pdfIn PDF document text
    • http://reresolakogix.rf.gd/free_car_racing_games_for_macbook.pdfIn PDF document text
    • http://pokitudid.epizy.com/airtel_tv_app_for_android_4._4.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_off0000e025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE025 5312 bytes
SHA-256: 23a2de3948c66274459e85a173b185b3a2dc9e112f79538a47cebec7c3b6b50e
font_01_sfnt_off0000f24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 10716 bytes
SHA-256: dbd8979ce9105ddcd69c940dd933e27bcfba60880a534d3b43ecb5f082e04238