Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6bf4426fb76560…

MALICIOUS

PDF

73.2 KB Created: 2021-02-26 13:17:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 792b5ff73fba99bc327718271b4085f6 SHA-1: da5cd2ec08930a8f0480561124f22d3b331027da SHA-256: 7d6bf4426fb7656076ee22265bb17eacb3a4a397c1ea5c4dcf3e6b3904df2eba
126 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
  • 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/award?keyword=is+wing+chun+effective+in+street+fight PDF link annotation
    • https://cdn.sqhk.co/gugapedulob/hihhibw/97809185553.pdfIn PDF document text
    • http://harkateine.fun/zobipel5fhh9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_601122ee4128b.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/nifhj5n/52536594325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470985/normal_5fe4d7aed5b95.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/gcIncij/velinopezewukafinoj.pdfIn PDF document text
    • http://lidedapomegila.iblogger.org/menaparodabuxunuw.pdfIn PDF document text
    • http://prizinsta365.online/sony_cybershot_rx10_iv_manualnitil.pdfIn PDF document text
    • http://lajibodomemebev.66ghz.com/bleacher_report_fantasy_week_3.pdfIn PDF document text
    • http://reweder.site/how_to_dye_hair_with_directionsdblqv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499635/normal_601ce25e1f7fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465269/normal_5fca07238a3e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kazaxese.epizy.com/4553127293.pdfIn PDF document text
    • http://romezegipoxo.epizy.com/54935011251.pdfIn PDF document text
    • http://jolijugidepim.rf.gd/what_is_included_in_planet_fitness_black_card.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_off0000e4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B1 4992 bytes
SHA-256: 13761bc4c065cbd87411c2ca6f9c7798d65a5de7ad38e802854f54f9b7dac5af
font_01_sfnt_off0000f5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CC 10100 bytes
SHA-256: a2713a95752ef19f012fb0f85620ed16e119d20d2a43a8548282bc16a741c828