Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c84052ac870dcd9…

MALICIOUS

PDF

36.9 KB Created: 2020-10-04 13:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4efb80e38e9a445f74faa93cd0f84f6c SHA-1: f9311825fc3f823c949c56927d1bfbdd948e6919 SHA-256: 2c84052ac870dcd9af04c5281104da82fa6083b6b1cbe3c722d45ec007882e06
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://gettraff.ru/strik?keyword=online+word+to+pdf+converter+and+merge In PDF document text
    • https://site-1039290.mozfiles.com/files/1039290/xazatexubakebunujuf.pdfIn PDF document text
    • https://site-1038636.mozfiles.com/files/1038636/kosunufekofake.pdfIn PDF document text
    • https://site-1036851.mozfiles.com/files/1036851/zobufiboz.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/sefofusa.pdfIn PDF document text
    • https://site-1036665.mozfiles.com/files/1036665/gilemefimela.pdfIn PDF document text
    • http://files.wapgc.com/uploads/1/3/0/7/130739312/3181696.pdfIn PDF document text
    • http://motibekur.brunswickumc.net/uploads/1/3/1/6/131636612/nebogo.pdfIn PDF document text
    • http://files.mommamess.com/uploads/1/3/2/6/132695892/bec8715.pdfIn PDF document text
    • http://xodakavew.growninourhearts.com/uploads/1/3/1/4/131482952/voxerinoj_vuwalum_tuxuzofas.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/8156e8e0-6f27-4c3e-a13a-0003a215feee/11134900027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca113e00-aaa5-40d9-8d61-dfb68e0b14e2/58041757235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd26af92-0071-47bc-95e9-a6a1fa3ba9e0/mukini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c88c9385-bfc5-4ca8-a106-3ba6635c7ccd/gupatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/vejatubuxiwabijexobudimem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6940/9946/files/a_certain_magical_index_watch_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/75408273328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7524/2650/files/choosing_the_right_word_unit_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/tekodunebakewubuvupi.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000512f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x512F 5476 bytes
SHA-256: 7b0f4eebd15eb1121ef77ffb5df4f9d6e0e8073bee44791370689adc8195eb1f
font_01_sfnt_off000063d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 10132 bytes
SHA-256: 6b51b6da67e0d9662b1a3eb08e247b6c9756a67773ff0fa80f8cc48425bb2c4e

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