Malicious PDF — malware analysis report

Static analysis result for SHA-256 74423ece0f2e6a3e…

MALICIOUS

PDF

51.0 KB Created: 2020-07-31 10:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b290600e71a25c6a372080caa75fc9e5 SHA-1: a02bddb9c691d4c1d860e3e4706658824f3d141c SHA-256: 74423ece0f2e6a3e1a7398c401342f92da20ed064ad4d9fe71b0c50f200fb4c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to the URL https://ttraff.ru/pify?keyword=drone+aerodynamics+pdf. This URL is identified as a malicious redirector, likely part of a phishing or scam campaign designed to trick users into downloading further malicious content or visiting compromised sites. The ML classifier also strongly indicated maliciousness.

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=drone+aerodynamics+pdf In PDF document text
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130813797/a7f99.pdfIn PDF document text
    • http://files.whatsjordaneaton.com/uploads/1/3/1/4/131410158/9f5b0bed404f6c.pdfIn PDF document text
    • http://files.rocio-madera.com/uploads/1/3/1/0/131071063/lojevomig-miwanizu-jozixidobo-gigizoko.pdfIn PDF document text
    • http://files.newholocaustliterature.com/uploads/1/3/2/7/132740339/jidakonizawofuboxuzo.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/1/0428/9203/4211/files/lidevoruruduzilofajob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/vugosogujonoxedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/3270796036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/21651392838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/6288308662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/12825080667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/xetofokofirejijinupifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0869/5192/files/tawemimipefeperilane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5512/7459/files/zajakepepolebubuwer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/votivonazotuxibolodumexeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofekofunore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/tidifawolizizorimimikit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/saletago.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_off00008a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A13 5080 bytes
SHA-256: c72eb85ca1e9cc3e262e0543f195818aaa1f415302e34cc82cfab72213cd03b6
font_01_sfnt_off00009b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B46 10340 bytes
SHA-256: cb58759ace65a6a3c8be4cc9d59afd2a556f4ae6b7a96514da74054d83cdafb5

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