Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d9f994b4ff5e81…

MALICIOUS

PDF

38.2 KB Created: 2020-08-08 17:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: beec9e7cac717156e80017b466455422 SHA-1: dc4a995e986f1de75d374e8c03fdab580e67820c SHA-256: 19d9f994b4ff5e81aa95a4abf60cae216d4ed4a7436fa7ba4c8aca86627b2f38
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large farm of external PDF links. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=basel+1+pdf', which is part of a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, suggesting a link farm or SEO spam campaign designed to lure users to malicious content.

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.com/pify?keyword=basel+1+pdf In PDF document text
    • http://files.illustrationpad.com/uploads/1/3/0/7/130775583/60d2ba971a953.pdfIn PDF document text
    • http://files.sjuartdesign.com/uploads/1/3/1/6/131606087/wulixakitanajukaf.pdfIn PDF document text
    • http://files.aspectsmediaimaging.com/uploads/1/3/2/6/132683014/236d6312ef701b.pdfIn PDF document text
    • http://files.snyder-pharmacy.com/uploads/1/3/1/6/131607712/mimalopedurijixolu.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/1/0438/5941/1094/files/worlds_hardest_game_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/kitchenaid_artisan_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/daxiwazitonowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/vupukex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4870/4917/files/costing_and_estimation_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/beechcraft_baron_58_pilot_operating_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6092/8405/files/pinozug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/popusuvudaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8243/9063/files/create_a_text_file_called_helloworld._md.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/present_perfect_affirmative_negative_interrogative_exercises.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_off00005a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A52 5040 bytes
SHA-256: f4790a9228d816e1f0fd1f88d14e7ac281f11208f3c542c57004fb46ab16e286
font_01_sfnt_off00006b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B94 9820 bytes
SHA-256: c67fe9887e9067785b5a95b084102255cc59d7be8a4123c51aa17614216e33c9

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