Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f867482d196ea2…

MALICIOUS

PDF

68.2 KB Created: 2020-10-26 19:50:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d8873599502415dcd826722a2754201f SHA-1: c76332eda247318c1d936848e04c4a2db1442c7f SHA-256: b2f867482d196ea28ee2d8d8f3537a26ca24a2ad8d656742c2e9e03be2a674b2
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://cctraff.ru/strik?keyword=leveling+up+familiars+pathfinder In PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/4258404.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/539333.pdfIn PDF document text
    • https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/c22cb388453e95.pdfIn PDF document text
    • https://lafetewefovizav.weebly.com/uploads/1/3/4/3/134385578/5093956.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/0326ba603fd.pdfIn PDF document text
    • https://munazuzane.weebly.com/uploads/1/3/4/3/134350045/sibizen.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/9303ff67d90.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cd07.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cd07.bin)
    • https://cdn.shopify.com/s/files/1/0500/8277/5212/files/99541896108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4991/4015/files/41566609295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/27385749108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0464/8859/files/yamaha_r1_service_manual_2009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2469/7509/files/neff_self_cleaning_oven_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/22288968576.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/questions_on_alkyl_halides.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/10th_new_book_maths_guide_download.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 extracted file (font_00_sfnt_off0000cd07.bin)

Related samples 8

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_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 5456 bytes
SHA-256: 79be7b136765c38aef0ca29861e4dff2dcd83c2f2aa11d1c2eee533729287339
font_01_sfnt_off0000df79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF79 10580 bytes
SHA-256: 1ed243614d0c8c18ddafe6b7aad24daeb1eeb5701ef4c135b4beedd79ea44a61

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