Malicious PDF — malware analysis report

Static analysis result for SHA-256 590edcc35aaaf1f0…

MALICIOUS

PDF

73.0 KB Created: 2021-02-28 23:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dced2e87a4eee6ebb97946b17e1d1ce7 SHA-1: 83839369c57c75c37f8302e3f7e1d01d416b54ba SHA-256: 590edcc35aaaf1f0b2f179dc1942a3cbdf200e71e1870ec72c8b851495643638
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/strik?utm_term=pharmacology+book+for+mbbs+in+india PDF link annotation
    • https://cdn.sqhk.co/moturalogupe/JUihMAc/derwent_lightfast_colored_pencils_12.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/gggehfj/surubixuzipino.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5fdef5537fa36.pdfIn PDF document text
    • http://lovelid.xyz/john_denver_songbookf2i57.pdfIn PDF document text
    • http://formverifiedbadge.com/tipos_de_sistemas_operativos_servidor1ngoz.pdfIn PDF document text
    • https://noselarinagebep.weebly.com/uploads/1/3/6/0/136051947/kejezuzag.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/cB9JSie/fejixixatufadizevuwejutof.pdfIn PDF document text
    • http://kaxiwemusemoj.mypressonline.com/linksys_re2000_blinking_light.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/suunto_ambit3_watch_band_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/gfhcShf/angry_stickman_zombie_5.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/how_do_i_know_if_my_washing_machine_is_high_efficiency.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/rasiwosexukabi.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/hp_color_laserjet_cp2025_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/barriers_to_effective_interpersonal_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/75027842576.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_off0000e269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 5740 bytes
SHA-256: c4b9f7da9d13c079ebd5f2fba222d626f04770f394d98a06d03406cfad325544
font_01_sfnt_off0000f5cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CF 9812 bytes
SHA-256: d3198b486ef50d17b1097886e225e10b6ed10fc1f2103fc776e06a5d5d9b910b