Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e68991732639a2…

MALICIOUS

PDF

69.8 KB Created: 2021-01-11 13:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b2616befe2ebaedfa8f8f0b14663cc0 SHA-1: c864c088e325044e5329947dab7317b3dfd7e7b9 SHA-256: b6e68991732639a2694108552816ba598d6fa7d64483628c710e55b610e003d2
196 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.
  • 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://traffnew.ru/wb?keyword=army%20builder%20spray%20paint PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453888/normal_5fd3389e867ca.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/rowevez.pdfIn PDF document text
    • https://tebakoreku.weebly.com/uploads/1/3/4/8/134866173/01e60fc5844076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_5f919a5bc4f5a.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/zonebon/autumn_leaves_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/95618906622.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/bed_sheets_traduo_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/47600285889.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/unit_2_worksheet_3_-_pvtn_problems_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/25116208666.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/cessna_172_weight_and_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/fusigijadovipen.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/loyalty_card_application_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/5e_barbarian_rogue_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/51371906696.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_off0000d2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 5336 bytes
SHA-256: 35f129d13d02d6b00fcedc9a0cd5eb3805f393128613ecd67fb1f2f9769ef782
font_01_sfnt_off0000e4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E6 11356 bytes
SHA-256: 8443fecca444d519bc243588e3cda0b52f2dfc8c703653126c0c5edfe59a7b1f