Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa869847021670bd…

MALICIOUS

PDF

49.9 KB Created: 2020-10-10 08:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 04e046996983bc544bcd0c7f26095ebb SHA-1: f618820190a95f06492bb8063d354edee204ccde SHA-256: aa869847021670bd5ac244f31fcf494033c3008cfb8d793222447860c82941f4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=runescape+range+guide In PDF document text
    • https://site-1039314.mozfiles.com/files/1039314/mipogipobijigofelegojapo.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/60861441526.pdfIn PDF document text
    • https://site-1043664.mozfiles.com/files/1043664/sasulutawojoxusof.pdfIn PDF document text
    • https://site-1039562.mozfiles.com/files/1039562/36008790788.pdfIn PDF document text
    • http://fumoz.emaginedthis.com/uploads/1/3/2/7/132710507/maxusu.pdfIn PDF document text
    • http://fizan.notein-between.com/uploads/1/3/1/6/131637503/a3ff6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7565/7121/files/hmf_optimizer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5164/6119/files/lab_puppies_for_sale_in_ohio_under_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2881/9353/files/75056567571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5039/6565/files/aosp_browser_apk_marshmallow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44a4cb1-063c-425c-8055-0584e58920bc/36897377222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e49de46-0dcb-4c41-8039-19357dfb3dc4/44934992735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c95df4b0-c136-492a-ba95-a61497ff539f/zekawiwonemonitilifimeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b4c2bb-8858-40a6-a6c3-397f7efa1153/zukijipalusemunutus.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_off00008658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8658 5216 bytes
SHA-256: 6c01c4e5990df19dac09357bc76f6766f56d2548006810e86db60946373f0991
font_01_sfnt_off0000982a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982A 10172 bytes
SHA-256: c81351b41e539faf2ad328f9acc4e3179652e6433b0edd1e8606befc2395553a

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