Malicious PDF — malware analysis report

Static analysis result for SHA-256 970552592e2e30ce…

MALICIOUS

PDF

51.6 KB Created: 2020-08-05 16:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33cb246229485d6eb5b7c3c8abfa29bd SHA-1: b6c1f75c64bc6e0778d735fe01a745705fe211ba SHA-256: 970552592e2e30ce5bd952db864cf4a07710a37960ee44bfbe2ad19a6efc3653
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded links, characteristic of a link farm. The primary URL, https://ttraff.ru/pify?keyword=silent+letter+words+in+english+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links hosted on Shopify, suggesting a coordinated effort to distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious verdict.

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=silent+letter+words+in+english+pdf In PDF document text
    • http://files.emilysaundersphotography.com/uploads/1/3/2/3/132302951/c186d1f01c62.pdfIn PDF document text
    • http://files.ithoughtidbemarried.com/uploads/1/3/1/3/131380730/faxokaruzowow.pdfIn PDF document text
    • http://files.k12animation.com/uploads/1/3/1/6/131606758/ba3e0696dd67.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/1/0434/5797/0328/files/pagitefegopukinasubiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/jakadivadawomowuvuxowox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/81948024492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9050/9973/files/58330887225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3365514284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/pidiwujowasuwuravupinut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/fevobenatiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/52491481419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5291/5098/files/nimotuduruzoxixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8817/4497/files/sikemosilaze.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 2

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_off00008755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8755 5288 bytes
SHA-256: f05941ae1053774c8b7dc994fc1c60f16280f1cbdfff43452e680550dd2d4b14
font_01_sfnt_off0000995b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x995B 12140 bytes
SHA-256: 66e03cbdc868d03e6979d85863564c01fad9af77e2a19a2a354b06330d323d55

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