Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81e7361b2c2e04b…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 14:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edb526d5418500ef9541f45fd68fa365 SHA-1: b92a6bc1db6860ef7b856cbd1cdd4b54414bc1b0 SHA-256: d81e7361b2c2e04b4b18acfb153ad7021c6f582290fe42fb43e99665b01ca226
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. The primary redirector URL, https://ttraff.ru/wb?keyword=formatting%20in%20ms%20word%202010%20pdf, is flagged as malicious. This suggests the document's purpose is to lure users to malicious content through a chain of redirects, likely for SEO poisoning or phishing.

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/wb?keyword=formatting%20in%20ms%20word%202010%20pdf In PDF document text
    • http://files.ilonayoga.com/uploads/1/3/0/7/130776131/befapituwado.pdfIn PDF document text
    • http://mewus.southporttaxi.co.uk/uploads/1/3/2/8/132814930/858b3cd.pdfIn PDF document text
    • http://jobez.hbana.org/uploads/1/3/0/8/130814674/jajasonidoso.pdfIn PDF document text
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.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/1/0430/8185/9225/files/63027523646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/98778420178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/69900330205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/rubuwumozunajuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3970/2687/files/39173409785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/vulewuxugaterimidalefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5993/files/94372101431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/os_x_snow_leopard_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/aiag_spc_reference_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/cbse_physical_science_book.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_off00005aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAC 5704 bytes
SHA-256: 1b15cca66757f36e48c1a2124156355270bc909eaf742f124365fe2e65fe9e86
font_01_sfnt_off00006e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 9692 bytes
SHA-256: 2627b24ac500ef881e4a791db30f2a4b0b557a7bd0b78a7cabf828d7d61cfb70

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