Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb63a997a65e0be…

MALICIOUS

PDF

46.7 KB Created: 2020-10-14 00:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4876b24a89f80b55850f3009f44323a4 SHA-1: 6a4358c72ff0bea9d84d868eb011e2523d4d51c9 SHA-256: feb63a997a65e0be31048233c6d3876ddaa6303307a953961368a3ae2792b4e5
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=island+castaway+mod+apk+download In PDF document text
    • https://site-1039752.mozfiles.com/files/1039752/937831966.pdfIn PDF document text
    • https://site-1037887.mozfiles.com/files/1037887/pimifufil.pdfIn PDF document text
    • https://site-1038397.mozfiles.com/files/1038397/26727187556.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/laresisif_kigadebokenub_bajutinerid.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nojof.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/1/0427/8570/2054/files/kikirexotobevolilojal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0266/1536/files/first_class_lever_examples_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2518/6971/files/la_taquiza_restaurante_de_tacos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/intel_gma_x4500_driver_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9890/files/41478649416.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

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_off00005fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 5320 bytes
SHA-256: a2607bc7f1f067282667e8c5d0398c5855f2fb23528838f1e7f95ee32385b4fe
font_01_sfnt_off000071b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 11032 bytes
SHA-256: ef981b310ef4e09db6cb4f49dfab38a8eb25a8e5ca34aec0e1485ffe0c2b12f3
font_02_sfnt_off000096c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C2 16192 bytes
SHA-256: 4e6de94b16689ff6e7cfc02b1ae22aeea9d98617287750045ea9dbe5b8941036

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