Malicious PDF — malware analysis report

Static analysis result for SHA-256 669c5c0238e24bf7…

MALICIOUS

PDF

40.8 KB Created: 2020-08-07 18:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1af8640b29e1551d77fd3fd9ac6cb1eb SHA-1: 91dbeb25c15041d87eaaf80a0794c9fb8a308dd5 SHA-256: 669c5c0238e24bf7e48e1b4b9e512513bdbbefd5a366a18a907b52b7dfceab8e
194 Risk Score

Malware Insights

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

This PDF file contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of external PDF links, suggesting a link farm for SEO manipulation. The primary lure appears to be a fake utility for combining PDF files, which redirects to the malicious URL https://ttraff.com/pify?keyword=how+to+combine+pdf+files+and+rearrange+pages. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content, likely as part of a phishing or malware distribution scheme.

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=how+to+combine+pdf+files+and+rearrange+pages In PDF document text
    • http://files.hansingelangoe.com/uploads/1/3/1/6/131606758/9176443.pdfIn PDF document text
    • http://files.food.madebytricia.com/uploads/1/3/1/4/131483584/detifebinoreluvufafu.pdfIn PDF document text
    • http://files.jillrapperport.com/uploads/1/3/1/3/131381288/0fb0c.pdfIn PDF document text
    • http://wimefulek.sofafoundation.org/uploads/1/3/2/3/132303382/9fcd26da2343.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/1/0431/2255/7095/files/jebojezigofibufuzew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/audi_a4_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4407/7722/files/42276513855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/pubuxazipowom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7729/4498/files/morubofifimepejab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/25101852795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/72022212645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/admirvel_mundo_novo_minhateca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/xasoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/seren.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 7

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_off00005f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F13 5668 bytes
SHA-256: 307b22f3b5d44255406b3bb3580b2076de97c1ba4b410a595f4d0172117b392b
font_01_sfnt_off00007251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7251 10668 bytes
SHA-256: 1f02590c1ea467b36e3965dd1b228561b247268d6ee52fb8e3c0ad96b2a58869

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