Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4264068c216a143…

MALICIOUS

PDF

44.0 KB Created: 2020-08-08 01:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b2830db787cf359c16a990e7f11c3c6 SHA-1: f65d7d4783c907d4e61bed29f1a725538b41cff1 SHA-256: c4264068c216a143a588f3b648938171b37e0100747c88769bf69d05a3529644
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of numerous SEO-optimized PDF links indicates a likely attempt to game search engine results for visibility.

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=redmi+airdots+manual+english+pdf In PDF document text
    • http://wubak.biblestudynotes.net/uploads/1/3/0/8/130814297/kudilozulipetev-nudawum-zizufefega.pdfIn PDF document text
    • http://files.glambyjac.com/uploads/1/3/0/8/130814297/jipilo_dutununu.pdfIn PDF document text
    • http://xebalige.laralindphoto.com/uploads/1/3/1/6/131636612/zaxafixa_pavukevena_nabovexogije_gojimoguz.pdfIn PDF document text
    • http://files.scamwatchphilippines.com/uploads/1/3/2/7/132740930/3026909.pdfIn PDF document text
    • http://vexeno.elevensixteenstudioco.com/uploads/1/3/1/3/131383949/18f1df1fec.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/1/0440/6332/6358/files/83892420525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6058/files/48133609761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13164506765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/dopisewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/zomomokezefufodipoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/safewegexofelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/35290557970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/1898376091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/fishing_pond_stardew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2797/0718/files/can_you_download_netflix_movies_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76106621034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8684/3799/files/buffalo_wild_wings_menu_calories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/4389365592.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 5464 bytes
SHA-256: 5369d3849ef45d240e922787726491fba743db863a0a3cb45b971a521812e89e
font_01_sfnt_off0000804b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804B 10224 bytes
SHA-256: 6fd3cf254528405001a1f2a3c4b4fa39dabf13d3b0ba5c9e156106da2f470796