Malicious PDF — malware analysis report

Static analysis result for SHA-256 10024ed37969fb17…

MALICIOUS

PDF

44.0 KB Created: 2020-11-06 04:54:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2284e3f7d9e563b015c2b2af05882e30 SHA-1: 937c7f757bc133b2a031787437ff086e5c9b6fd1 SHA-256: 10024ed37969fb17b95c80dfca837f0f3c5e478b9ebca382db6868b3eaa15a7b
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous external links, many pointing to an SEO redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm strategy. The primary malicious URL identified is 'https://trafficel.ru/strik?keyword=level+22+b+cubed', which is likely used to redirect users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafficel.ru/strik?keyword=level+22+b+cubed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f875cccb9255.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/broussard_middle_school_lafayette_parish.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/principles_of_genetics_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/vosedifezubatojokuraneda.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/6394725.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/nelusanelofefogemikemibuf.pdfIn PDF document text
    • https://s3.amazonaws.com/rotafasaniz/82346472715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5f9c968d41236.pdfIn PDF document text
    • https://misamizejip.weebly.com/uploads/1/3/4/3/134348089/fabad-labovuwukikozaf-vibasezaniwut-sezofigu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5f973ea19b58b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f89588f5f22c.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/13728e0c-2b49-4543-8fc2-73cdf99af1dc/73703953877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fbb318-eeb7-45a4-aab3-5b870c495a09/advocacy_job_cover_letter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5bbe18-d3ba-42ca-a81c-fe74c9ea8cab/python_for_dummies.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

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_off00005a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A71 4724 bytes
SHA-256: 242040dff6ac6d3eb1016b20b37db1b2df05d48a342a9c91610e12ecd5bcfb45
font_01_sfnt_off00006a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9F 10332 bytes
SHA-256: c4b39da0ee2c6ccb0040e87981aa203a83f8a5b30ac273613a5268af2fb15f92
font_02_sfnt_off00008e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1E 16164 bytes
SHA-256: b99f3422495d7000f36add31b3ea8bcefcdd5e5fae1582619ff78f5357176837

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