Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2344d12070aac9c…

MALICIOUS

PDF

36.5 KB Created: 2020-08-16 18:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e15c0fa6b3352398ba997ef44ce4d61 SHA-1: 2544d6941aefbf5c7214dacdef79479a6668327f SHA-256: e2344d12070aac9c7a27cb880ea85fc27e2f58a419ee82e00aae36bcd490baa2
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL is https://ttraff.com/pify?keyword=sophos+client+authentication+agent+windows+10, which is likely used to redirect the user to a further malicious destination. The document body contains obfuscated text and references to software updates, suggesting a lure to trick users into clicking the malicious link.

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=sophos+client+authentication+agent+windows+10 In PDF document text
    • http://files.darrellbissing.com/uploads/1/3/2/8/132814073/notujut.pdfIn PDF document text
    • http://myhelpdesk.store/uploads/1/3/1/6/131637830/bunafunifagobi.pdfIn PDF document text
    • http://files.theyogatreegardner.com/uploads/1/3/0/8/130813111/9012800.pdfIn PDF document text
    • http://jawimip.themaximumgamer.com/uploads/1/3/1/4/131406436/tejova-vonon.pdfIn PDF document text
    • http://files.johnlalla.com/uploads/1/3/1/4/131453393/nefuxaxikozodiguza.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/1/0431/3153/5524/files/convert_to_word_android_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4090/5128/files/tecnologias_de_la_informacion_y_comunicacion_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/tizepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/belly_up_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/97984092692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/vokezenazunozegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99397771733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/medidebororun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9452/2518/files/bewokazizolom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1246/4535/files/fikatunesuwabefupalesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/dream_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/40494737130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/zet_bus_119.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_off00005026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5026 5628 bytes
SHA-256: 251e86ac2c2f82d0ea78f50d3860ef36d4c0c8eb71672149b09b969a93f677db
font_01_sfnt_off0000635b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 9704 bytes
SHA-256: 2d0b1d8afe02575265055369f7e1cdb423061432758c1ca960c65ef280db7592

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