Malicious PDF — malware analysis report

Static analysis result for SHA-256 941d0eb5e7060f20…

MALICIOUS

PDF

50.2 KB Created: 2020-10-25 10:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 90e6ec09b6ab88831db0dcf9c766434e SHA-1: f8486102787ed7b3d18b65b2fbd3bdac8840d5fe SHA-256: 941d0eb5e7060f2067dbcab81fb9f8b7a269235762c9ee656095c4936981db74
194 Risk Score

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://gettraff.ru/wb?keyword=admission%20form%20for%20college%20pdf In PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/3250b5961ed1.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/7ce4c39a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f87453a38d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f94f3c7af650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8f60a141eb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387406/normal_5f920227491b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f889fb51fd41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jipowumat/1873147822.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/nifidiposadakizowu.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/simple_present_tenses_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/jizilugudatosilokopiniz.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/12835371945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ab1d67-82ab-4295-a31f-a9337642545a/67806401183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69df9729-00e2-4a01-b452-12b58c15d3e2/58637664490.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/pazevuzinuvovaseva.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/motor_areas_in_cerebral_cortex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/24360523686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/solar_powered_pump_for_pond.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1595/3310/files/80851250608.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000873d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 5252 bytes
SHA-256: 6156b5561d5cdcfc6ef45ae7cc099def895fb29bc0a757719409d678ad7af82e
font_01_sfnt_off00009910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9910 10088 bytes
SHA-256: d176c58b12fa86cc768dbf42713c0ba907624fb3c625f1b7c897c90270f37dc1

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