Malicious PDF — malware analysis report

Static analysis result for SHA-256 43745d742a2fb0fc…

MALICIOUS

PDF

72.6 KB Created: 2021-02-21 23:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d1668a6f7f679f31f4a67d187f31c9c2 SHA-1: 860dfb92c7795cd76fa3c0448424c950b9d0d1dd SHA-256: 43745d742a2fb0fc5932a38aaa4c2c42d6a0308b932c71f27b1343b49ebf1073
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=maytag+stackable+washer+dryer+not+drying PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494147/normal_5fd2ebea01a08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_603201a75765a.pdfIn PDF document text
    • https://cdn.sqhk.co/mafokesaxuvi/YBFqhir/33147604405.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445550/normal_60021520d730e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_601bb0b4e73d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5ff7b70c97912.pdfIn PDF document text
    • http://nimened.66ghz.com/chubby_cheeks_dimple_chin_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fd0b4e51fb04.pdfIn PDF document text
    • https://cdn.sqhk.co/forexajepusa/WGihGii/lemon_crinkle_cookies_allrecipes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_6018ed1d7c40b.pdfIn PDF document text
    • http://all-gopro.com/photography_website_templates_themeforest1t64j.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/BjjTmhf/shaolin_kung_fu_training_center_in_kolkata.pdfIn PDF document text
    • http://rent-nout.site/planet_fitness_coming_to_mason_city_iowayg4iu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403672/normal_6000bfe31af28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tituroxir.rf.gd/11258520095.pdfIn PDF document text
    • http://diverozisutujew.epizy.com/gerapepitezekidodorago.pdfIn PDF document text
    • http://mudozegiviw.epizy.com/78913752438.pdfIn PDF document text
    • http://xawabaxazulaga.epizy.com/gitzo_reporter_tripod_parts.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_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 5604 bytes
SHA-256: 578a8ff72de53ed3097cf71c64a94fc7db97eb171539165e2706802cd159c298
font_01_sfnt_off0000f21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21F 10368 bytes
SHA-256: 24dbaa6227fd49dbaba1ef1e2724337a0c6a43ea5c15cbb3cd002db8b954ae87