Malicious PDF — malware analysis report

Static analysis result for SHA-256 8340e8bfadee4718…

MALICIOUS

PDF

47.4 KB Created: 2020-08-02 19:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7bd11bc9f31dec5651e75c95d1c1f9a5 SHA-1: bbff49bdf3fd3c70b8756d7d6a0052f90c1a91e5 SHA-256: 8340e8bfadee47181cef62d43e18c95fa30faa946648977130e757d6d9e59365
194 Risk Score

Malware Insights

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

This PDF document acts as a link farm, directing users to a malicious redirector at 'https://ttraff.ru/pify?keyword=woodland+park+co+weather'. The document's content, though heavily obfuscated, appears to be an attempt to disguise the malicious links under a seemingly innocuous topic. The presence of numerous links to external PDF files, many hosted on Shopify, suggests a coordinated effort to distribute malicious content or conduct phishing attacks. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.ru/pify?keyword=woodland+park+co+weather In PDF document text
    • http://files.deannalsletten.com/uploads/1/3/1/4/131406344/031d596f2ae78d5.pdfIn PDF document text
    • http://files.mainstreetenid.org/uploads/1/3/0/7/130776611/zokewelizot.pdfIn PDF document text
    • http://files.fairviewlakestudios.com/uploads/1/3/1/1/131164239/17be5.pdfIn PDF document text
    • http://files.musserbuilders.com/uploads/1/3/1/4/131437987/padasavikuwil-bimizidawafer-zadoxefubel.pdfIn PDF document text
    • http://files.keepingthefaithal.org/uploads/1/3/1/4/131438211/a9862c30.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/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/81080485026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/molecular_biology_principles_and_practice_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/kulekimokojukonaxubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/44700216428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/mabavuzuzafokelupiposuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/3629782106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9829/files/43675598637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/33326966847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/38045941458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/guwevaj.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_off00007bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC4 5152 bytes
SHA-256: 5be735913736e9afd0895cc521dbd689d84a02208e0c87e20d12deb17d6a927a
font_01_sfnt_off00008d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D61 10272 bytes
SHA-256: 3bdbc5e312e5eb16590a0617414a006a6487c02dd2d24677512804fe7cd24d9e

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