Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f01d6f52238e13…

MALICIOUS

PDF

73.3 KB Created: 2020-08-31 00:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a3be2e7c706410b25ad63aac180beec SHA-1: 05acc50c1850f5f673983150fc6f4a4157f11f43 SHA-256: 87f01d6f52238e13880bb73612daa00e5710614750e42c1e3d278b7f51563eea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector URL, suggesting a link farm or phishing campaign. The primary redirector URL is associated with malicious activity. The document body and metadata indicate it was generated by wkhtmltopdf, and the content attempts to disguise itself as a 'marie kondo pdf download' to lure users to click 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.cc/wix?keyword=marie+kondo+pdf+download In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5e3700100bf8468690f178499c8e90fc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5438e3_bff2fec23baa48ad87ead2f0267a52f6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/efb3f0_4046bed7921e427f953b84b1d9ba2072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0802/files/basic_proportionality_theorem_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/calidad_de_vida_laboral_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/xagogawog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0635/3823/files/sevil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1257/0787/files/brainstem_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/14111553348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3958/0575/files/dejizinopaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/brawlhalla_cross_platform_switch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5052/0996/files/arduino_mega_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/65790967126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/filiduses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/47089536716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/amenaza_de_aborto_manejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/5079000971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6569/9478/files/java_foundations_4th_edition.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4E 5020 bytes
SHA-256: c0d87ffc9dfbd802484877edb438b9fed672336a79bcb0b503b2f927d26ea03f
font_01_sfnt_off0000ce85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE85 4416 bytes
SHA-256: 5f5450576ed247d4bcd3538c2fcf6d0f88c9fadb4a7bfd16723cb28f24931d3d
font_02_sfnt_off0000da82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA82 11472 bytes
SHA-256: 07cd92da485b5a5edd579446924e3784eb917e27474c0f1029688f1766a90791
font_03_sfnt_off0001011f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011F 16376 bytes
SHA-256: bc7e3f6831be34686de02ce7be2a06b9f1fa2b1a298201cd6e3dc3baf4672bf7