Malicious PDF — malware analysis report

Static analysis result for SHA-256 d747634d83959434…

MALICIOUS

PDF

49.6 KB Created: 2020-11-09 04:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5172518f18b6e64d93687728f31b717f SHA-1: 1e340f158f531a78bfad3ad54b64845f2fdf35da SHA-256: d747634d839594342676a6b09a073647e93a1120d607b154a5d7b0a244c4ec62
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that is flagged as a redirector for free-download phishing. The ML classifier strongly indicates maliciousness, and the document body, though obfuscated, contains the same URL. This suggests the file is designed to lure users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?keyword=what+is+a+jefferson+starship+in+supernatural PDF link annotation
    • https://sivivaleretuvu.weebly.com/uploads/1/3/4/3/134324596/1947500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476150/normal_5fa796ba45c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5fa46f9b0e2ca.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/suxupovilerel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f995edd7e1b5.pdfIn PDF document text
    • https://belonimilulufaf.weebly.com/uploads/1/3/4/4/134403367/cadb8d6effbc4b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b8449efd-e961-451f-8bfd-0414650b9341/jaxuxilezifofexiledus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e0a4d53-43fa-4cc6-a923-4303050aedf7/best_nature_for_snorlax.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/blue_lug_nuts_5x114.3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AE 4960 bytes
SHA-256: f8b9ee721110ee2caad93569ea7011bc6c40b3475136eae0e6021b40b3c2c7bd
font_01_sfnt_off0000878d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878D 10292 bytes
SHA-256: c22abac7ea82a2c4f42e8dc2be606d90faf4a7468299043ddaa224f1b344d441
font_02_sfnt_off0000aae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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