Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d4e720af97ba29…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 22:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ed2760cd47ec6d8a696503d1961b340 SHA-1: 2db8a2dbd631b4f845a76d0f9aeaa469074ed168 SHA-256: 80d4e720af97ba29885005612bc4ecb9596372534e56f7c0e55c201efbe2e576
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 downloads but redirect to a malicious domain, identified as a redirector. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm, suggesting a phishing or scam attempt. No scripts were extracted, but the embedded links are the primary threat vector.

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=collins+german+english+dictionary+pdf In PDF document text
    • http://files.davidstaceyphoto.com/uploads/1/3/1/6/131606490/9681162.pdfIn PDF document text
    • http://files.whitethornequinehealth.com/uploads/1/3/0/7/130775373/laxebudamepawe-bufamadelilexon.pdfIn PDF document text
    • http://files.keyuped.com/uploads/1/3/1/4/131454770/29125.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/1/0440/4012/6614/files/nubilar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/dazudane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/jetutosaregizezize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3315/6001/files/easy_algebra_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/zexuganejemifedota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/bewesenopadigoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/riferotoxeninox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/nixudukerokilavigevopoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7875/4199/files/majifuberixotex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9892/files/how_to_reinstall_npm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/kesufinifaji.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 4

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_off00006055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6055 5576 bytes
SHA-256: 9d1ce35d90777da2c2a239f6a329f40506a2b29615323ecd3e8ef98ea9c7fa88
font_01_sfnt_off00007326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7326 10020 bytes
SHA-256: cea86f5baff303765cf648ca830f8128648e7e3bdfb576db6637b3f5c4996004

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