Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf48292336b43267…

MALICIOUS

PDF

53.7 KB Created: 2020-10-26 17:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 43f850e53575ca02f2a274fbe43a43b5 SHA-1: e1266595ea9550a2b9be4e0c2a5969887c5c0be8 SHA-256: cf48292336b432674a147117348222c533e35aa6450a88c62b0e2be751c5f55e
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=punjab+textbook+math+9th+class In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/6382f.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/7184314.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/zurukuxidiro.pdfIn PDF document text
    • https://gugekeki.weebly.com/uploads/1/3/4/3/134374678/4703474.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off000092d8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off000092d8.bin)
    • https://s3.amazonaws.com/zoromexemuzid/30496327158.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/36550656665.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/matabaxuberotiwofo.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/dalotejugosivob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bfaf22e-1a74-4c35-9b86-1ea1bd28de6a/moduzezatatelodunonu.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/loderajosanonemi.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/rajezeluzoboga.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/indian_constitution_amendment_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/bijafavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/94082456727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/relationship_between_metabolic_rate_and_oxygen_consumption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/granberg_chainsaw_mill_winch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2113/5783/files/nafefigobafisalukeje.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_01_sfnt_off000092d8.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6853 13184 bytes
SHA-256: a33caee7fdf8ca228c7618a5d89647df5903c633a25648774770f61466b5ded5
font_01_sfnt_off000092d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D8 5448 bytes
SHA-256: b61ababce1aff006932d3ee590fef414cf3343ac99f8030d9908d03f0e0e7227
font_02_sfnt_off0000a540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA540 10660 bytes
SHA-256: 333c28d10b8c13c10953ecdd6e73d13875a86b02af5cf4f941da654ad0a9a4f0

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