Malicious PDF — malware analysis report

Static analysis result for SHA-256 6580c816614676b8…

MALICIOUS

PDF

33.1 KB Created: 2020-08-25 15:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ad04c14a577548d66523c9adf6f627f SHA-1: e74323471caa45a8029960e585bcb1429610f6b6 SHA-256: 6580c816614676b8b0665fc36ccb75d7333db775828aacb7b55b9f54844a8976
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation, likely to phish users. The document body contains a URL that points to a redirector, which is also listed as a high-risk IOC. The ML classifier strongly flagged this PDF as malicious.

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://ttraff.ru/pify?keyword=are+re+meri+motto+song In PDF document text
    • http://files.longrangeacademy.com/uploads/1/3/2/6/132681969/sasekov.pdfIn PDF document text
    • http://pakijuvo.streetlightchurch.net/uploads/1/3/1/0/131069934/xudolu_wopirufeludimo.pdfIn PDF document text
    • http://files.columbiapresbyterianchurch.com/uploads/1/3/0/9/130968961/1614375.pdfIn PDF document text
    • http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.pdfIn PDF document text
    • http://files.cachevalleylandscaping.com/uploads/1/3/0/8/130814133/afdb8e47bda347.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/1/0433/2571/8678/files/jixukezomiditutavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/kerala_beef_recipes_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4431/5040/files/xajipemosisorageg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/40114373593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/jexawenadusef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/2000_pontiac_montana_repair_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/18160215092.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_off00004763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4763 4752 bytes
SHA-256: cf2702ca41a4f100ffc44ff270ad178f7d750b9dcc819155ef745766e506aa4b
font_01_sfnt_off00005776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5776 9472 bytes
SHA-256: 2833208dd3fff03b880cd69f9bb9beed424e5788d7295a5f315f650b15c87326

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