Malicious PDF — malware analysis report

Static analysis result for SHA-256 6752b3cbc8e8be40…

MALICIOUS

PDF

40.9 KB Created: 2020-07-31 10:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 761eab61300cdf3289bdf0509ede1fcf SHA-1: 6372d429337c521ed92d480da3028f8fa78d9377 SHA-256: 6752b3cbc8e8be40991f44d6cd929a232c7e340853c0d24b3ed8ab994c49a557
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to the URL https://ttraff.ru/pify?keyword=professional+boatbuilder+magazine+pdf. The document body, though heavily obfuscated, suggests a lure related to a 'professional boatbuilder magazine pdf'. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=professional+boatbuilder+magazine+pdf In PDF document text
    • http://files.northopchurch.org/uploads/1/3/1/6/131606393/razapexida.pdfIn PDF document text
    • http://files.oonaghmcdonald.com/uploads/1/3/0/7/130740625/1092232.pdfIn PDF document text
    • http://files.karizmaconcerts.com/uploads/1/3/1/3/131380029/1290954.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/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/zodaruvafemomifit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/73842840927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/71198829096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/sirifinurigokin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/16430844509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/42376439293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7299/files/5974567766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vuzalij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.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_off0000624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624C 5436 bytes
SHA-256: 10973611d2df882bd48ea2fceeab7107808df8efb6981e5826f7054c7aabeb62
font_01_sfnt_off000074a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A3 10008 bytes
SHA-256: 8ef101084583fc4eebb085ae7dffb8dc3b21392ea6da214956e49ddb8d1fe4cc

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