Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b855b093a86f200…

MALICIOUS

PDF

74.7 KB Created: 2021-02-28 17:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f8178d9f7c79e30f49dd168bb79568b9 SHA-1: 427202e3f5e0467d40a6ad7671124d27a7beee40 SHA-256: 2b855b093a86f200cbed2bfaca7a956d9e5d023c706391cc334f2a31f9d6f87a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dugedepap.ru/award?keyword=factors+that+affect+density+of+the+world+population PDF link annotation
    • http://fawikenaxalu.scienceontheweb.net/english_short_stories_for_kids-panchatantra.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/ia5YVFv/35685523521.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/jgjeiji/zarekawigupovida.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/ruger_sr22_purple_grips.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463543/normal_5fdde47b92cb8.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/fozojunodazetewutuva.pdfIn PDF document text
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/625ca337.pdfIn PDF document text
    • http://mirumumavetifun.mypressonline.com/putove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_600f922f78063.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/Plgcjiv/caterpillar_chunky_trainers.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/a7fb05cb7d9edd.pdfIn PDF document text
    • https://vezitiratad.weebly.com/uploads/1/3/1/8/131856143/3947154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_6019ae73cc5dd.pdfIn PDF document text
    • https://revasarubon.weebly.com/uploads/1/3/5/2/135295272/afd7456c6a22e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470231/normal_5ffc01bdba1d0.pdfIn PDF document text
    • https://gavuwili.weebly.com/uploads/1/3/1/0/131070236/nujivomologabesuxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zotubune.myartsonline.com/dirt_devil_power_express_upright_vacuum_canada.pdfIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/libixexewuximelulita.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_off0000e852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE852 5392 bytes
SHA-256: c2857f50eb8fe3b966658fc2d42961ab8785f15e949a0baa91dcb12fe865e0b1
font_01_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 10224 bytes
SHA-256: a24d4b2e1ba64ef5df34572c52684a06e322e346bfb01ff8511973c5164170fd