Malicious PDF — malware analysis report

Static analysis result for SHA-256 df80ea2126b6f5d5…

MALICIOUS

PDF

41.3 KB Created: 2020-08-07 14:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f61598c58e4d8857ab0d8b8c4403146f SHA-1: 38543f10b64b46c2f474a662ce9398a9c9aa3c51 SHA-256: df80ea2126b6f5d5973491cff8f2d0cbb4f1e5d762445754f5c10e57d05218a7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of an SEO link farm. One critical heuristic identified a 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 users to malicious infrastructure under the guise of providing a technical document.

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=basic+engineering+drawing+pdf+for+first+year+diploma In PDF document text
    • http://files.tracyandstacy.com/uploads/1/3/1/4/131455158/duzobuxuloziga.pdfIn PDF document text
    • http://files.sidingsupplyinc.com/uploads/1/3/1/4/131482959/1945563.pdfIn PDF document text
    • http://magaja.spasavoirfaire.com/uploads/1/3/0/8/130813765/97d8a61245176e.pdfIn PDF document text
    • http://sirun.surface-cleaner.com/uploads/1/3/1/3/131380845/f997d.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/1/0433/2670/1718/files/zuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/gimosonetapisoger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/xewujavire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/criminology_larry_siegel_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/55760370791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/wujebububowoxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/75516513105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/jugunesafikolaweve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/galikekawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/79834077806.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 4

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_off00006339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6339 5720 bytes
SHA-256: 178533fddd76f57529ea95e7d52360959e674140a994aaa93a327d9254488d05
font_01_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 9732 bytes
SHA-256: 3bad57e97653eee311c0a816983d79594382960ffe67defdbf792767e53269e5

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