Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f2418083780b88…

MALICIOUS

PDF

49.8 KB Created: 2020-08-09 10:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f8bb6e83d6c667f16c42a43db935ebf SHA-1: 830cc18040f79bda0044ef731c150717b381ffe7 SHA-256: 79f2418083780b884cfa50434036b3f320b9b0196e95b45cf6428b0e91303ed3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning scheme designed to trick users into downloading further malicious content.

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=world+map+outline+with+countries+pdf In PDF document text
    • http://files.misssantafe.org/uploads/1/3/1/3/131398406/ribudafov.pdfIn PDF document text
    • http://files.krystianalisha.com/uploads/1/3/2/3/132303035/3643002.pdfIn PDF document text
    • http://ridik.spinnakerworldwide.com/uploads/1/3/0/9/130969426/6240122.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/1/0433/7421/5331/files/buwopazugez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/44147301691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/lafumamisabigal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/fufilukizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/kivibiwepitekudoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7783/5681/files/45816226600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/komimawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/3360398101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/georgia_bill_of_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/30741323512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/asc_606_revenue_recognition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/gamajagogomusonima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/jelubusiwavalelakoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/placenta_previa_ultrasound.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 2

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_off00008336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8336 5500 bytes
SHA-256: 5fd7674df1f26228fa3e1de4c987192ea3a2755224a7560ea64538f69860494b
font_01_sfnt_off000095d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95D5 10652 bytes
SHA-256: 4f53fc275b097536f32a5c0da965e5b759d89f9e9849d185dd11c53315fd38a4

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