Malicious PDF — malware analysis report

Static analysis result for SHA-256 84804e44fc20dbe4…

MALICIOUS

PDF

60.1 KB Created: 2020-07-30 17:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17fecd9de455f0aeb8b4e07286a89c44 SHA-1: e72ae754bda153ff0e8a4c1b62515c70169cb13e SHA-256: 84804e44fc20dbe46d84e2291a5065f0dc0717a52ab4517743d79ff0a9a2ddeb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to SEO redirectors, with a primary malicious redirector identified at `https://ttraff.ru/pify?keyword=blackguard+book+pdf`. This suggests a phishing or scam campaign aiming to drive traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection behavior.

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=blackguard+book+pdf In PDF document text
    • http://files.littlepicassobaltimore.com/uploads/1/3/1/4/131453206/bomaroluxameje.pdfIn PDF document text
    • http://files.koshtex.com/uploads/1/3/1/6/131606822/378629.pdfIn PDF document text
    • http://files.dreyfus-emerson.com/uploads/1/3/2/6/132696111/nopuxadodatunapom.pdfIn PDF document text
    • http://files.xmmphoto.com/uploads/1/3/1/4/131437254/a4b55fc7.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/99237037604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasukeseduvemuledup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/38146877511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/tazufanukezotefexadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/vutetolafezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/644203674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/12006235510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/65651667208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/27824911891.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_off0000adf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADF6 4928 bytes
SHA-256: 1d66c522c1cd759dacf0d261465d66fc3a399d8a8df734e1929a3ef54c629940
font_01_sfnt_off0000bebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBD 10696 bytes
SHA-256: 33c19cf5f4577f94c582e7fb7908edd0f73b7813c15b70935a7199122a29d0ac

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