Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f57d0eb40a2511…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 01:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a7b0e9417793202b1dad6c0ed5764519 SHA-1: 19ec8fdf944fd6dcac2d830f09f700449b76580d SHA-256: 59f57d0eb40a2511ecf440d0fda9620512c44aa71ff76d05f12cde5ce6efe628
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://maypoin.ru/123?utm_term=how+to+use+a+vicks+steam+vaporizer PDF link annotation
    • https://ralanuda.weebly.com/uploads/1/3/0/7/130775203/3129297.pdfIn PDF document text
    • http://pewagupudasita.22web.org/79444270513.pdfIn PDF document text
    • https://cdn.sqhk.co/nukebomevobe/jeFMh21/tulawufigireg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_5fd2347dde301.pdfIn PDF document text
    • https://tebugusenaj.weebly.com/uploads/1/3/4/8/134870623/640a20234c.pdfIn PDF document text
    • https://ripixupazina.weebly.com/uploads/1/3/5/3/135343237/domepitoguw.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/jjbzcrY/shelter_from_the_storm_dog_rescue_madison.pdfIn PDF document text
    • https://masonijajalef.weebly.com/uploads/1/3/4/7/134708569/2abbc226.pdfIn PDF document text
    • https://cdn.sqhk.co/nebemina/9hghhfp/siwafutakasejewi.pdfIn PDF document text
    • https://bawufavipefal.weebly.com/uploads/1/3/0/7/130740211/8426378.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/ijjaWEM/rotinawijudaxumo.pdfIn PDF document text
    • https://nafepamozox.weebly.com/uploads/1/3/1/0/131070284/juzuru.pdfIn PDF document text
    • https://lagomide.weebly.com/uploads/1/3/5/3/135304015/3501116.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mivuturirem.rf.gd/interpreting_box_and_whisker_plots_worksheet_answers.pdfIn PDF document text
    • http://dekuravimej.epizy.com/academia_school_simulator_mods.pdfIn PDF document text
    • http://zupamifub.rf.gd/5293636572.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/9487049408.pdfIn PDF document text
    • http://koxaxinum.epizy.com/dajijonawemipamol.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_off0000de55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 5276 bytes
SHA-256: 4e6c3ab9454b7f9becebdbc2a31bc418fb39d5412dcb000dd315cea2ed446be6
font_01_sfnt_off0000f04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04D 10700 bytes
SHA-256: 3a3ab610306724727875db867c2998c5e7946c16a6f38d5edd27eddfc8a201ea

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