Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f17c69d3b533f6…

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 02:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c2cf2a6e0766537f7f5df7304535f4d SHA-1: 2d5781ccf676d0d605b57238f56eb1cf7f0e991f SHA-256: c8f17c69d3b533f6a74f937d5391d669e368b61fa88aab06fb250dcf6699fa5a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector designed for SEO phishing. The document body, though obfuscated, suggests a lure related to corporate reports. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links points to a link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=illinois+corporate+annual+report+form+pdf In PDF document text
    • http://files.heanyoutloud.com/uploads/1/3/2/6/132683168/towebikige_xizokegiv_juzilewigifudoj_vigaxumamog.pdfIn PDF document text
    • http://files.badass-beautyenvy.com/uploads/1/3/1/3/131380467/7fedb7c429b.pdfIn PDF document text
    • http://files.antikapictureframing.co.uk/uploads/1/3/1/3/131398046/9b996.pdfIn PDF document text
    • http://files.yogascapesinjapan.com/uploads/1/3/1/1/131164275/8473436.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/1/0438/4423/9510/files/37359688451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9822/6329/files/11756813835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/zakuduvuwatedogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6038/8259/files/30074201066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/16724736325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/tariwufaxiduduguxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/binilomunegaroxipido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/pikezuvaxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/nomujesajosubuwerurag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/xigobezosafajatuf.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 7

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_off000077f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F9 5120 bytes
SHA-256: 92afc37e30f88005b2989fbd86e21d4fd3b19ec684df45417e8575ac65da4efe
font_01_sfnt_off0000893c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893C 10560 bytes
SHA-256: a15eade1f1a8045fd360192064442b4e9216365ab19d4fdb8d8d8b154b87ac20

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