Malicious PDF — malware analysis report

Static analysis result for SHA-256 354a41de11c367d6…

MALICIOUS

PDF

46.6 KB Created: 2020-07-24 17:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c9c8771efac985517c26a110d547fe7 SHA-1: a0c97ae4d57b614528f6012539aa4a94526036ba SHA-256: 354a41de11c367d6ae6f5236fb37cbeb1ca43d6ad657b2eff10286a4fd76da71
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=a+great+big+world+younger', which is flagged as a malicious redirector. The document body is heavily obfuscated and appears to be largely junk data, but the presence of numerous links suggests a social engineering or redirection attack.

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=a+great+big+world+younger In PDF document text
    • http://files.wren-project.com/uploads/1/3/1/4/131407547/nexufemel.pdfIn PDF document text
    • http://files.towardharmonywithnature.org/uploads/1/3/2/7/132710782/tujisulamalerum-latejufirori.pdfIn PDF document text
    • http://files.sincerelythecraft.com/uploads/1/3/1/4/131406202/994971.pdfIn PDF document text
    • http://files.milkywayenglishretrievers.com/uploads/1/3/1/4/131483254/futisasoviwavi.pdfIn PDF document text
    • http://files.nessasnotes.com/uploads/1/3/0/7/130738924/16bd308df095.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/1/0431/9723/5363/files/goboropaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/62265307179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/67077311416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/86919202940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/79360198818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2128/6050/files/dubor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/xofopoxovukotodefiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4677/files/poxujufojasujulitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/nejibomimawotitimilusidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/zerulonorimumol.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_off0000782f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782F 5020 bytes
SHA-256: 13d9b43ad92014fffd478a9e8f81005fc6ccb4036ef1efa4ed1da6c229ecbcf9
font_01_sfnt_off0000895a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895A 10552 bytes
SHA-256: c0c593e4cb14c512a273e85613e7b1b20f05ba023ead1e0757478a6f0b88f8f6

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