Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2d4e1b2e5291b0…

MALICIOUS

PDF

74.1 KB Created: 2021-02-16 01:36:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 77f2b7ffa1c553ae93d5b207c7eb7671 SHA-1: 021abb9d3bd3f3f32d26e7c798b4c4d05f5cd1a6 SHA-256: df2d4e1b2e5291b00593d54c172344f41cb2e63e5f95a9d7da55b1db044190f4
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/123?utm_term=logitech+saitek+x52+pro+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452392/normal_5fd26fc86e848.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5ff2b3a503229.pdfIn PDF document text
    • https://vegekonewipure.weebly.com/uploads/1/3/5/9/135964828/suvowebajor.pdfIn PDF document text
    • https://gotivewa.weebly.com/uploads/1/3/1/0/131070711/kurumuketuxuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5fe9a8495357c.pdfIn PDF document text
    • https://goguribepolim.weebly.com/uploads/1/3/0/7/130739596/dowovegazaveja_mawafo_dajemojesatem.pdfIn PDF document text
    • https://befugusugub.weebly.com/uploads/1/3/2/6/132683140/godogoz.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/zopenave/cage_distance_framework_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/34196439474.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/gisaxama.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/photography_invoice_template_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/rigiz.pdfIn PDF document text
    • http://bezuxij.rf.gd/john_deere_mower_tire_tubes.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/37589410837.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/material_safety_data_sheet_clorox_urine_remover.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_off0000e32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32D 5644 bytes
SHA-256: 57cbccd7506e4c096fff2a754799681912353bb9f1a4d1cafaa2d01696ba0836
font_01_sfnt_off0000f682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF682 11020 bytes
SHA-256: 96857fdcf55bdb620c7695b775314241783968ec8fc3110aeaa97a9407e9d3c9