Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff24d435f237984…

MALICIOUS

PDF

45.0 KB Created: 2020-10-14 07:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 809f7638640d5bc3e9580991edba14cb SHA-1: 3f684570119fee6ba075c522f76bcd5cec8faab2 SHA-256: 2ff24d435f2379848cd08503e2e9c8b3ecf4bab6a6eb011e0a299a9c2826e37b
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=applied+surface+and+colloid+chemistry+pdf In PDF document text
    • https://site-1039733.mozfiles.com/files/1039733/jeralewilaruxasivotuv.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/jijitafafozige.pdfIn PDF document text
    • https://site-1039795.mozfiles.com/files/1039795/jozidugun.pdfIn PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/86198641830.pdfIn PDF document text
    • https://site-1040203.mozfiles.com/files/1040203/voromivilefopobisu.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/0c18874847f.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dbbd04.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/b4b3eb38b.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0439/4011/8683/files/nofupumogozojavoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9100/6108/files/burovimaputa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6179/files/wemovob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/dalod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9376/3254/files/warfare_1914_unblocked_hacked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3304/8741/files/skills_worksheet_concept_review_environmental_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9107/6283/files/totitopuratanozapuxuwikez.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

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_off000067be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BE 1636 bytes
SHA-256: 59647f1ebeca446cb7b14327fbfe7452410d861d1fe3742f48ab687bd9cbe571
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 5484 bytes
SHA-256: e65719b41911b182c509480d81b447183eb8bb5f68d7f5be00ddc169b5691d27
font_02_sfnt_off00008268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8268 10492 bytes
SHA-256: b26c29d065f1dd9810145d3f2c7ad8a76f5914d50017b844f4e08260706a29a4

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