Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3b583f06e51c9f…

MALICIOUS

PDF

39.4 KB Created: 2020-09-17 05:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ac90d2bf0f9c6927692857620371471 SHA-1: 9a32c9f0b932088ea641b9ddbfaf848f184fc0c7 SHA-256: 8c3b583f06e51c9f3ad2f1788e48fbe9fea804e8b353409b67585e60deab33d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One prominent link, 'https://ttraff.club/wix?keyword=horses+in+the+back+remix+roblox+id', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a link farm or redirection strategy. The presence of numerous links and the identified malicious redirector indicate an attempt to lead the user to harmful content.

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://ttraff.club/wix?keyword=horses+in+the+back+remix+roblox+id In PDF document text
    • http://files.ginquistphotography.com/uploads/1/3/1/4/131406563/4246713.pdfIn PDF document text
    • http://files.debarkeddesigns.com/uploads/1/3/1/3/131384721/9b2d6b649.pdfIn PDF document text
    • http://files.sirkil.com/uploads/1/3/1/4/131454034/9ba47808dc3f3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://784e1254-343c-436b-a9e1-80bc7e16b1b6.filesusr.com/ugd/c88839_260a1bc65bd641108e681571b6a80b32.pdf?index=trueIn PDF document text
    • https://1ae716e7-0117-4f73-8327-a2b8baeacdf6.filesusr.com/ugd/2994dd_c1ea7d459158410b948bd86e11089f58.pdf?index=trueIn PDF document text
    • https://765aef3a-5fda-4d6b-8bb7-549f4895eb90.filesusr.com/ugd/7598fa_214e4dd14c2347edbadf54b8faeb20f2.pdf?index=trueIn PDF document text
    • https://99c6f765-dbb0-4dd9-bb66-4bbc49d74c12.filesusr.com/ugd/067ecb_91e00a4c70f84b189b0ca12ce7bd635e.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5370/2550/files/29247393203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/4549/6487/files/rustoleum_spray_paint_safety_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/alcatel_u5_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/fishing_report_central_oregon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/que_es_nivelacion_barometrica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/17418361838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/a_journey_through_anglo_american_literature_learner_s_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92835403356.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 8

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_off00005054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5054 5412 bytes
SHA-256: 38c75a0a32a113e47338e006940eae33b91883add63d88d969dbab71d3addd67
font_01_sfnt_off00006289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6289 14192 bytes
SHA-256: 8b74c108a531e31ad141b3c402ad807dd98bb0ab2069d8e881bcdec93ccd3c7e

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