Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b66f748895fc3df…

MALICIOUS

PDF

45.2 KB Created: 2020-10-01 01:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 83e7d5cb076efa7a044d6010f74b7aa6 SHA-1: 46f833881d8f7a75106cfd61374e7dfea44c4adc SHA-256: 2b66f748895fc3df9ce506c347a9ffdb6e8b2b3c80d0225e54584e3df83c8790
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/strik?keyword=pdf+file+to+jpg+online In PDF document text
    • https://site-1038768.mozfiles.com/files/1038768/70655299744.pdfIn PDF document text
    • https://site-1037145.mozfiles.com/files/1037145/12626211807.pdfIn PDF document text
    • https://site-1038313.mozfiles.com/files/1038313/nezijowoluwa.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/wiwiribejininude.pdfIn PDF document text
    • https://site-1037224.mozfiles.com/files/1037224/39682431663.pdfIn PDF document text
    • http://rabisew.katiequerna.com/uploads/1/3/2/8/132814930/7772e.pdfIn PDF document text
    • http://files.thealilife.com/uploads/1/3/2/7/132740329/rekure_lixezipu.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/petolibi.pdfIn PDF document text
    • https://site-1036659.mozfiles.com/files/1036659/nitokavaxat.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/1663475109.pdfIn PDF document text
    • https://site-1039777.mozfiles.com/files/1039777/kiwutawojafivejul.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/66348435524.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/1/0432/0821/2638/files/88415112832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/xejoduvunokofajijosaluwom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/watch_twilight_free_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/casual_employee_termination_letter_sample.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_off0000758e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758E 4804 bytes
SHA-256: fcf2e15ad096f5764864a705b058cecae83aacf6066d2c0c7e3ed2cfe55a1df8
font_01_sfnt_off0000860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860C 9888 bytes
SHA-256: fa45939466f0de23aaa9183b5870c0154d02467352a042074216546f12904cde

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