Malicious PDF — malware analysis report

Static analysis result for SHA-256 b440aec607b4adc3…

MALICIOUS

PDF

41.6 KB Created: 2020-09-18 20:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8d65df8d8083a66139127f2083de318 SHA-1: 622f6ae6994cad9a808ecc86faf075722b08313d SHA-256: b440aec607b4adc385317264c29c8efb0ae504855e3a79e685eeddd351196dab
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and are part of a link farm. One prominent URL, 'https://ttraff.me/wix?keyword=torture+chamber+ragdoll+games', suggests a lure to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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.me/wix?keyword=torture+chamber+ragdoll+games In PDF document text
    • http://bunuf.inclusivejourneys.com/uploads/1/3/1/1/131164312/voxezaja.pdfIn PDF document text
    • http://vekeru.librariansonbikes.com/uploads/1/3/1/4/131453005/jukubixasapadob_nuxixexadar_dababuj_zamarijiraneze.pdfIn PDF document text
    • http://files.phdigiproducts.com/uploads/1/3/0/7/130739039/8009321.pdfIn PDF document text
    • http://files.anengineersblog.org/uploads/1/3/0/7/130775228/doguzosifa.pdfIn PDF document text
    • http://files.jackwebbperformance.com/uploads/1/3/0/7/130775111/webubuwu-kowijixu.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/1/0428/8770/8825/files/23837352441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7177/4615/files/getopopal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/gatixosulevadigozila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/avon_and_somerset_police_report_lost_property.pdfIn PDF document text
    • https://58ffdd61-7ce1-4d90-af36-ffe34719fb99.filesusr.com/ugd/6203b9_64ab68b8eefe485aa92c80545b55acd3.pdf?index=trueIn PDF document text
    • https://0a985e23-4c65-4353-b8d0-8715af10929a.filesusr.com/ugd/ff68bb_4497023646a448d98571a041090f84e1.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6811/0488/files/mafivuletofexopeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/all_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1673/0277/files/call_stored_procedure_using_jdbctemplate_in_spring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/kedagatitalujomoro.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 2

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_off000062ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EA 5444 bytes
SHA-256: af809f5591416b3bfbef45451aa4faf4566f96f17249cbcc2e084d051251a776
font_01_sfnt_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 10572 bytes
SHA-256: b8780a8ecd55fb2651e96bbb81de77d66170d41cce5f682c4825b06bf47a84f6

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