Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8d729898fe045e…

MALICIOUS

PDF

35.8 KB Created: 2020-10-11 03:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dff6428347a0f55e30955e0c02715f30 SHA-1: 0bd922486a8ff436da38793b5a035c280581ecb6 SHA-256: 2c8d729898fe045ef9c8fea8499750708fde4839e91b442135af5f55a0914f27
202 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.
  • 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.
  • 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=descargar+autodata+2017+full+espa%25C3%25B1ol In PDF document text
    • http://lupajiwu.quyennl.com/uploads/1/3/2/8/132814930/7670467.pdfIn PDF document text
    • http://files.clintonbracesmd.com/uploads/1/3/1/8/131871622/5456291.pdfIn PDF document text
    • http://files.artandsoultimmins.com/uploads/1/3/2/7/132740435/nemuti-dagututinuraz.pdfIn PDF document text
    • http://files.college-boundplayerportal.com/uploads/1/3/0/7/130739712/nejajukoxe-bafisunuwi.pdfIn PDF document text
    • http://files.jubileechurch.us/uploads/1/3/1/3/131380433/b21b50c3ac1.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/8e11b283-265e-4bb3-beba-43b0596fc257/buxonagotuwuzobikumaxugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69412cd-aa94-4500-9ff7-f4629f788cb6/11034869305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9813378-0361-4d54-ab68-7eb1c67be1ab/76408460850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9967931-f922-4f8b-823c-25e3e7c57841/47793682452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bacede6-f62d-4aa1-9ead-322b6fe9a070/maxanoloxowesukogikewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c25c61-26d9-444b-afac-9da801e8521b/tilijanisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0115cfb8-5119-4fb6-8f63-58b076fd7497/67517178180.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 7

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_off000049bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BD 5940 bytes
SHA-256: a70e7024f3019ab3d2e75f8cb3335b219e3bccd06e3856eec4e586139ec18fe7
font_01_sfnt_off00005dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD5 10044 bytes
SHA-256: 730fecaf2bdff094ee53894b0d221fefb48d95a85e7b067b86206c9bacd1bd95

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