Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a38fb6210082c4…

MALICIOUS

PDF

56.9 KB Created: 2020-10-09 04:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bc54b77b085b367b72b8968fd6cfbae9 SHA-1: cdd75eb640d71cdce10cba81dab53bc4097e757b SHA-256: 17a38fb6210082c412a52412f2c428343e102fdd526fc847e6908b96c0613b58
234 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://ggtraff.ru/strik?keyword=jquery+file+upload+acceptfiletypes+excel In PDF document text
    • http://gipat.ezivase.com/uploads/1/3/1/4/131438161/vogunovo_zuvotus.pdfIn PDF document text
    • http://files.kirkbymilerevents.com/uploads/1/3/1/0/131069766/5594667.pdfIn PDF document text
    • http://nided.dominadomino.co.uk/uploads/1/3/1/3/131380212/nunajuzonogosej-saniguzigopog-tajedazefezexu-luvusupo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2520ad95-1157-481d-aeb0-7eab500ce347/wipibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8a34f7-424d-4d11-90a0-7c34d7fd0704/65533631715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa4f45de-b0f9-4e4a-ab23-1f7552c3466d/tikupadasuxodifujaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/665cb3c5-ba8f-476e-a048-157d62d8aec5/dejawen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2990c4a0-7a3a-40e4-8a2f-60da408526ef/pajixulivepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d42efdf7-a173-4e8c-9d09-410a59efc597/rarozugetiluvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20ed6ee6-5387-435e-b27c-7f9afa27d27e/68205510586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77594c06-124d-4760-8ce8-e759e7c3137d/xawamuforedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5160a3-f95e-478d-b635-eb6119c868df/70919195511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7adcf11-017f-4def-965c-2cee83fbff2e/85074134.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000931e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x931E 5432 bytes
SHA-256: 4ff47f1178fc6c9032e8f1f4500471a59e89579dbbc55c35e55295cbd582a318
font_01_sfnt_off0000a5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5BB 15376 bytes
SHA-256: 481c8e67b3ba55f78d27e49514961472eda9d885b36623a979ca2f12d1d55c29

Open this report in the interactive analyzer, or submit your own file for analysis.