Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fd00fc1413297a…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 20:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1cf3ab845aafc9cebb2a9242dbf07b10 SHA-1: b19ebdac0b674398da6d7422aeaf15c246ee022f SHA-256: b3fd00fc1413297a892d2a3798a4c61763f6c269c2564428fe13d065c4f9458c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=mod+apk+clash+of+clans+unlimited+money PDF link annotation
    • https://pajodiwid.weebly.com/uploads/1/3/0/9/130968992/6360235.pdfIn PDF document text
    • http://kpupnov.pro/a_dolls_house_characters_analysisof8h2.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/hfrwmNo/minecraft_guide_to_survival_book_big_w.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/rijaxajawumaxapox.pdfIn PDF document text
    • http://megatorg.ru/38519120560v6jwd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479441/normal_602a1556be16a.pdfIn PDF document text
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/9259bcf698b.pdfIn PDF document text
    • http://alexandreablog.com/titanik_filmi_trke_dublaj_full_izled64mv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_60251b97c55ee.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/gjFheji/rolly_legs_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/lFMKJhi/final_order_tie_fighter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5fe1a96f4cf00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456369/normal_603a5a8573733.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369776/normal_5fcbafc1c5b18.pdfIn PDF document text
    • http://copyrightshelpscenters.com/warlings_armageddon_hack_apk_mediaf_rell34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5fd13b033e7a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474998/normal_5fe7cbe05d8e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2A 5468 bytes
SHA-256: dbca77574cea6b800a7e1733115d67e39f26afb440a9395cc934e7f86c7c9806
font_01_sfnt_off0000edbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 10508 bytes
SHA-256: ab03b3a0bc1e79e6ce870c3aa11fa4edac3ec471abd86fb769a4e7f5fb39158b