Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3fba90588d011c1…

MALICIOUS

PDF

69.8 KB Created: 2021-02-12 12:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f63ba1f7871045857a688bab2225d8d3 SHA-1: 71cd536f23caabba5478104549fdb6ba765dc57c SHA-256: d3fba90588d011c11590e2ddc9b4569ee154457a60edf5dccfd96271955923e8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://bologen.ru/wix?keyword=envision+math+kindergarten+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409110/normal_600a220775124.pdfIn PDF document text
    • http://tehnopolis.org/math_vocabulary_list_with_definitionsjsg6v.pdfIn PDF document text
    • http://hookup668.site/world_war_2_battlefield_finds6x9zw.pdfIn PDF document text
    • http://copyright-security-ig.com/gadudidonuluwloc9t.pdfIn PDF document text
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/juvejaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381534/normal_60144220c50ff.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/iiWAiaG/26229747968.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/gjPrjgp/dark_green_bubble_jacket.pdfIn PDF document text
    • https://xemageka.weebly.com/uploads/1/3/1/3/131380316/dawopinaw.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/slaDDii/7158260790.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/Vgi9iiC/extreme_bike_stunt_top_bike_race_free_games.pdfIn PDF document text
    • https://kokesekodabese.weebly.com/uploads/1/3/4/0/134012443/5162186.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/akjhhhf/fizotomisereduxugupupifo.pdfIn PDF document text
    • https://fumuradowije.weebly.com/uploads/1/3/0/7/130739974/2fcd3fe060.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zedovapovakodev.rf.gd/kuxawimawa.pdfIn PDF document text
    • http://tepuxasimu.rf.gd/sample_sap_user_authorization_matrix_template.pdfIn PDF document text
    • http://velawomonoxejuz.epizy.com/dofexufuvusotawanenono.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A6 5504 bytes
SHA-256: 71b0a06108228cff7c7b903fcbe965d5688588348efcb87f0d437c1f11472aa4
font_01_sfnt_off0000e43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43F 11392 bytes
SHA-256: 4358ca205d43fe446bce24aea03ece3a4ca2836f56bafbbdc766973f15d18000

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