Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4e257c5e7e2363…

MALICIOUS

PDF

40.9 KB Created: 2020-08-26 05:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1adfcebc19757c48e67726d010e3a0b5 SHA-1: e2703cfff689f73451dcbed2468aecbb730e9d50 SHA-256: 9d4e257c5e7e2363ff45aae3e4a22f25bf261649e9e8b75e790f0ac625deaf1d
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning model and contains a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body contains garbled text and what appears to be a reconstructed URL, suggesting it is not intended for human consumption but rather for automated link distribution or redirection.

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=nginx+%252A2+%25C3%25ADndice+de+diret%25C3%25B3rio+de+est%25C3%25A1 In PDF document text
    • http://bivisibap.dobiedomain.com/uploads/1/3/1/6/131606289/luxowulusulud.pdfIn PDF document text
    • http://files.ctpartyrental.com/uploads/1/3/0/7/130739128/zurabaratod-gobutarowikuzog-ruxosak.pdfIn PDF document text
    • http://tubikete.glanbrookcadora.ca/uploads/1/3/2/6/132695213/22cb99.pdfIn PDF document text
    • http://files.wseast1984.com/uploads/1/3/0/9/130969334/28052.pdfIn PDF document text
    • http://files.mainstreetblytheville.com/uploads/1/3/2/7/132740586/469772.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/1/0430/6809/6661/files/97824968798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9906/files/os_argonautas_do_pacfico_ocidental_coleo_os_pensadores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/89358178442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9100/9442/files/liditisefatuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/81276249094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/mmorpg_the_almighty_ring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/25729248395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1779/6770/files/java_code_for_tic_tac_toe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8140/8416/files/mokavomijoputavofijekelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5016/2583/files/las_instituciones_voraces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/52221369140.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 5

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_off00005c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6A 5524 bytes
SHA-256: fbeb914c155668cdcf13981f6f663c0ab9492cac960f31fda5e9fee7536940cb
font_01_sfnt_off00006f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0B 12108 bytes
SHA-256: 0f6aae5fa330b60ac95670d49d6760cedb1cc11694aa3cac46688748cfa41697

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