Malicious PDF — malware analysis report

Static analysis result for SHA-256 8524cd032afb8eda…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 00:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6450addbbbfe62b9c8845f0654ea1583 SHA-1: 45f0b9a10963ddfc287c1919e5064b47a3f9dc00 SHA-256: 8524cd032afb8eda4ebbf1cce685e12cbd7268a42ea06b14b73ef95495ad0af7
194 Risk Score

Malware Insights

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

This PDF file contains a link farm and a redirector URL, suggesting it is used for phishing or to distribute further malware. The document body, though heavily obfuscated, contains text related to product listings and URLs that point to a redirector service. The ML classifier and critical heuristics strongly indicate malicious intent, likely related to spearphishing attachments.

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.cc/pify?keyword=bottines+plateforme+talon+cuir In PDF document text
    • http://files.marksoftime.com/uploads/1/3/0/7/130775795/dunubo.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/1/0433/7310/1219/files/zapitojidafofemidaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/bcd_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/53167960365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipudakafadaned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/jafabofimukevetenoluguxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/77465945397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/17408172822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/37258041612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7900/6376/files/dbmci_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/astronomy_today_eric_chaisson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/jufosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/aut_aut_rivista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/bumewom.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 3

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_off000069ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AB 5212 bytes
SHA-256: 7dc9293d0a10b1c2c55100d828db9455301be158060eb19d120e712ae2b94c34
font_01_sfnt_off00007b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 11216 bytes
SHA-256: 2992699bb32dc7cb2b24431e6dd8b3ac8d4f8cfec48c6b50f53590eea7fe4347

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