Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a06479fe300b17…

MALICIOUS

PDF

40.2 KB Created: 2020-08-04 12:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89a29e1bf0b9c52ebe27cf85520da180 SHA-1: f8410d5ae220749508d1fb3d7f46599e37659a65 SHA-256: 73a06479fe300b17653ce9af69f606e260ec366d03c9ff95075fbb85c144ad42
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=sentence+according+to+structure+pdf'. The document also exhibits characteristics of an SEO link farm, suggesting an attempt to drive traffic to potentially malicious sites under the guise of providing downloadable content. The ML classifier 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=sentence+according+to+structure+pdf In PDF document text
    • http://files.thegauge.us/uploads/1/3/1/4/131408100/5087998.pdfIn PDF document text
    • http://files.rlcraftvinylstore.com/uploads/1/3/1/4/131453990/5af30c11ec.pdfIn PDF document text
    • http://files.lukasz-drozd.com/uploads/1/3/1/1/131163533/funuwolazatuvak.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/1/0430/6976/7842/files/31030585407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/kikexisadaxafelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/budebajuwutimekudik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9289/4105/files/80031275682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/discord_bot_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/foxofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/zovogotekutetavaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4326/4411/files/rusogujasipireniduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/nukimipizibadawopixokepos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/62216585207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/fodoxibipuziko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/fight_night_pc.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 6

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_off00005f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 5396 bytes
SHA-256: 16c4ca472dfb0f930b66c3294f768ca47eba7be26c96f828027fbf45e09f138e
font_01_sfnt_off000071c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C3 10076 bytes
SHA-256: 734ff492588ca33b0651dde8ec52baff53e97f2d3d2ab88d3f2bdc85e7705532

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