Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa93f93282e03bd3…

MALICIOUS

PDF

46.7 KB Created: 2020-10-15 00:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 22b914725768a5a764d4277c593c0d92 SHA-1: e47c73b88ce71a5a4d3e0aa58810e3b79ef136e9 SHA-256: fa93f93282e03bd332f86a7161b0c09ea9e5f516a899ced4882da66b85c0c864
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/pify?keyword=osteosintesis+de+radio+pdf In PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/sedomu_tetas_fijenif_malonakafeli.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/43f9db53ee5.pdfIn PDF document text
    • https://site-1040288.mozfiles.com/files/1040288/54201953562.pdfIn PDF document text
    • https://site-1040354.mozfiles.com/files/1040354/sigajivepawoz.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/wuwomavimuja.pdfIn PDF document text
    • https://site-1042679.mozfiles.com/files/1042679/39087868588.pdfIn PDF document text
    • https://site-1044055.mozfiles.com/files/1044055/6028737535.pdfIn PDF document text
    • https://site-1037914.mozfiles.com/files/1037914/41535218316.pdfIn PDF document text
    • https://site-1041404.mozfiles.com/files/1041404/67826142349.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/1/0481/8406/6205/files/descargar_arpspoof_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/download_eraser_apk_terbaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/sirunitunikod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4093/3541/files/69787421913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/31044109623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7299/5996/files/96890352588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1113/2573/files/taxefo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7854 5032 bytes
SHA-256: 391ca5bfb37d0137aff1eb0b94f93b5f38f91beaf0a9b5e534c862e1f8c1f81b
font_01_sfnt_off00008978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8978 10796 bytes
SHA-256: dda74f652f25f0166eb25a1650a16f714cfd9cb7d862982f17a2cb01007d8faa

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