Malicious PDF — malware analysis report

Static analysis result for SHA-256 8291d1c5d7e996d0…

MALICIOUS

PDF

45.7 KB Created: 2020-07-30 22:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b7dacd64103d6f62b28e9339618ea2d SHA-1: 6ac2d5d35d85cc1784be7b1f04517ce4ded2a6f8 SHA-256: 8291d1c5d7e996d07d0ba187745e69f8c2f95eee4a12e6c0b91b65914ee1d5b9
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate documents, but they ultimately redirect to malicious infrastructure via a redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a clear intent to lead users to harmful content. While no scripts were extracted, the structure and embedded links strongly suggest a phishing or scam attempt.

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.com/pify?keyword=defense+authorization+act+2020+pdf In PDF document text
    • http://files.langleycyberpatriot.org/uploads/1/3/1/4/131453588/lafowowifosaz.pdfIn PDF document text
    • http://files.foxchapelnewcomers.org/uploads/1/3/1/4/131407734/xatoxerejafej.pdfIn PDF document text
    • http://files.decodingdyslexia-az.com/uploads/1/3/1/3/131398334/a3a87.pdfIn PDF document text
    • http://files.millermommy.com/uploads/1/3/0/7/130775768/6235654.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/1/0433/3119/0952/files/kafakumibexazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/60082772008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/xusij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/jetaxatupop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/zinowegeriperibore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0489/files/sulatixilitikefuziruvepok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/melinebimitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/xidujetimadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/busidizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/48015993541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2452/1128/files/19556922557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/depugug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3023/9642/files/sufiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/lukimupodebu.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_off0000736e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 5416 bytes
SHA-256: cd48934cd4499f4eb127af30d566204c04e8e8bd75d3d853f1ea309562b6e8a7
font_01_sfnt_off000085da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 10404 bytes
SHA-256: bd3f8da64d49ef4fce1cc278da32fefb383a4ed5e5fd84fcd07fe01cedcc6860

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