Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa115ee0926a289…

MALICIOUS

PDF

84.7 KB Created: 2021-02-27 23:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 049138e50babe245144862d86abe4302 SHA-1: 2dd0b0f9ed25ded19c4dcf8c418494e22f74463f SHA-256: 2aa115ee0926a2892c8356d0be2d4c632ae223d2fbeae5b00c6737ccef8d3bde
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/aws?utm_term=pride+and+prejudice+movie+short+summary PDF link annotation
    • http://lixorajepidil.mygamesonline.org/warren_wiersbe_be_books.pdfIn PDF document text
    • https://gagopono.weebly.com/uploads/1/3/2/6/132681316/6939620.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457318/normal_5fdbc35e24b59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485445/normal_600f0271d0f4b.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/EhcifD6/fabekuzevinob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_600a756d23572.pdfIn PDF document text
    • https://cdn.sqhk.co/gasalikuviz/geSjb9v/secret_of_mana_map_dwarf_village.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/3Vji2F8/xujewetusalewolidur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393209/normal_60129ef1f41f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/petubapizo/95135082639.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/bloodsport_3_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/42390789353.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/43106870736.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/bittorrent_android_app_location.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/64203212432.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_off00010cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC1 5520 bytes
SHA-256: 394b771d34d6ebc42039e4112c31e5ceea63d6fc82cfc95abca25bd92eae267d
font_01_sfnt_off00011f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F73 11228 bytes
SHA-256: 1774d3e9f4ed91665b84a520cfe95786b3492d614f1b13a597e50cac242159a8