Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c60edfe226b1a13…

MALICIOUS

PDF

50.1 KB Created: 2020-08-07 09:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8129c3b8296462cb8cab21d78f5a638b SHA-1: 3ec3ed174d5fbfd770d5bbb6a6513d2f986a8139 SHA-256: 3c60edfe226b1a13a9e2c974989b23f6fa10082a2bea4ffb85c82627d1663b6a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document's primary purpose is to lure users to malicious infrastructure.

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=seguran%25C3%25A7a+em+tecnologia+da+informa%25C3%25A7%25C3%25A3o+pdf In PDF document text
    • http://files.tmeansphotography.com/uploads/1/3/1/4/131437085/d94c038250d6.pdfIn PDF document text
    • http://files.sparkycarpetcleaning.com/uploads/1/3/1/1/131163540/jamanopeme-tijemovotusize.pdfIn PDF document text
    • http://files.firstchurchnyc.net/uploads/1/3/1/8/131856433/972816.pdfIn PDF document text
    • http://files.rubiis.com/uploads/1/3/0/7/130775698/boronofabudog.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/1/0437/2260/4695/files/immunization_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/6922470764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/46323328141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fester_s_quest_nes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/goluvukawelidana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/best_cinematography_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/repabubuzepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/64169537343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2264/5408/files/website_to_converter_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/20266732845.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_off00007d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8A 5900 bytes
SHA-256: dc08b14d4aa66fcd62131b1187097d416ca8a1d7598e73188752ec259f4d41f7
font_01_sfnt_off000090b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B2 13492 bytes
SHA-256: b53f55f80a398ce838086778c0dc4cdc1933a2c1be86b42f9960db39164f6b9e

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