Malicious PDF — malware analysis report

Static analysis result for SHA-256 13101c64d92fe025…

MALICIOUS

PDF

66.1 KB Created: 2020-08-13 14:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7c1008ec36c1fa797291f3e9c5fb412 SHA-1: 05470240e412bb6b5cd85d9d7a7b4360692a9fe8 SHA-256: 13101c64d92fe025e70389b38fc4799fe9c077dbc23f2d80b2043f8c9a7b6178
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing attempt. The document body text, though garbled, includes a lure related to an "ultronic touch screen alarm clock manual" and a URL that is also flagged as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of many external links supports a malicious intent.

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/wb?keyword=ultronic%20touch%20screen%20alarm%20clock%20manual In PDF document text
    • http://files.sparkybuddy.com/uploads/1/3/1/3/131398259/5146045.pdfIn PDF document text
    • http://tijekup.davidson-eng.net/uploads/1/3/1/4/131482975/dogofafutapelut_pamokagote.pdfIn PDF document text
    • http://files.milwaukeecharteradvocates.org/uploads/1/3/1/4/131413718/4926669.pdfIn PDF document text
    • http://xosave.rodmanhallalliance.ca/uploads/1/3/0/8/130813834/gerilanol.pdfIn PDF document text
    • http://files.stillpointwellbeing.com/uploads/1/3/1/4/131438418/votujinujevuso.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/1/0434/5148/2278/files/jilevageganusugotufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/bopux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/agnes_martin_lugand_livres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/black_and_decker_iron_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8151/3625/files/antigona_de_sofocles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4728/1062/files/bamotebuzinofejijokete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/bharathiar_university_bca_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/50880416867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/mawurimini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8151/files/48089397057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/bible_book_of_genesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/44036655007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/bisosekumuko.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_off0000c2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C5 5096 bytes
SHA-256: bba213006750a723aa597f685c922e2495424a60d8f395220ede1e5888b1f87e
font_01_sfnt_off0000d3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E5 11772 bytes
SHA-256: 27733149b1658fac363f33b7b2075dd92dd9bfeb2b34c8ab8b89dd1a86fd6fe2

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