Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc63a48815d51f67…

MALICIOUS

PDF

46.3 KB Created: 2020-10-16 04:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e5b7f3799013ed2470b48fb81222db36 SHA-1: e8180ed001ef8819aeccc4fb5b343b16be79023b SHA-256: bc63a48815d51f67ae9fafcba1c0b867dbae8d0ce4e622d043e987b568cf6248
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?keyword=marvel+avengers+game+for+android+download In PDF document text
    • https://site-1038669.mozfiles.com/files/1038669/4836334563.pdfIn PDF document text
    • https://site-1040134.mozfiles.com/files/1040134/mupazevonubijajinezezuf.pdfIn PDF document text
    • https://site-1044192.mozfiles.com/files/1044192/judena.pdfIn PDF document text
    • https://site-1041184.mozfiles.com/files/1041184/66195022594.pdfIn PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/zevonafinugidaluxufaxo.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/5713232.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/fe34ed819a.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/luzisovilisav.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://pagofere.weebly.com/uploads/1/3/1/3/131398194/1632242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8707e0a9fd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f86f52359028.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/68dc3d04-cead-48bc-8f93-361fab92028a/fujitan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52a3f573-ed98-43dc-ac09-50749448033e/79492689708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d657f6dd-ed8b-40e9-9057-d87ea3ad01ae/xobuguzopibagikobimelejoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0cde85b-1067-4a3d-b88a-06bb237deb18/92581928225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18b81bb8-19d4-4f4e-95e2-3097c8e81b4d/wumawafosodaxuritovota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9055/2005/files/xemogurunusovilul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4986/4353/files/92917917115.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_off00006ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE4 5384 bytes
SHA-256: 6665ef234976c570604cec611b27a9e339566e13a20a28415c28c640fa8878b6
font_01_sfnt_off00007f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3D 13948 bytes
SHA-256: 2cb277faec2ab714f76641f87f231d43da053b45b06a2fb058c254b6728da25e

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