Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c38e4457e8b9862…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 00:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4264bcbe6ac3b7ddc0b98ea49c5e17a5 SHA-1: 2994b6a3ab040444d2cd94a12ce69bb9e64b4174 SHA-256: 5c38e4457e8b9862e9955c5b703f272d6a1a578150d34406bd3edac23a2f3c0a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links designed to appear as free template downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=tri+fold+restaurant+brochure+template+free, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this redirector and a large number of other PDF links, suggesting a link farm or SEO poisoning tactic 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tri+fold+restaurant+brochure+template+free In PDF document text
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.pdfIn PDF document text
    • http://xejukifon.gillbio.com/uploads/1/3/1/4/131407197/dujazoj.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/1/0431/1243/1770/files/fotabusibudawakezapupijap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6460/files/18670712510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0951/0297/files/taloxiluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/how_to_find_facebook_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/edexcel_igcse_human_biology_revision_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9594/8454/files/21044038831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2957/7118/files/63513796250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8696/2076/files/canoscan_9000f_mark_ii_scan_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/35092565120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2238/6069/files/luxivukezedetesubapowuxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/49819465750.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_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 5484 bytes
SHA-256: 6b4abd15faff05a4baae969a6cf9f7b713701b890ccc43cbe665d0bc9d212e71
font_01_sfnt_off00007520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 10128 bytes
SHA-256: 15ec6d4c6af810697f0a1331473c5f02408670fd53ded08278585795a158f02b

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