Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b760aaed4b7c85…

MALICIOUS

PDF

61.0 KB Created: 2020-10-28 21:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a399da71556268493c9458ae50ec62c9 SHA-1: 96a430a84844849da7110bc749f909598d410dae SHA-256: 45b760aaed4b7c8513b0a3688c7152ea12a71bdbe8dd06d413b60164d0f3620f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ttraff.link/pify?keyword=minecraft+iron+door+recipe In PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/nexuwa_jopiteralaxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8d410d00b88.pdfIn PDF document text
    • https://gejimedetudumi.weebly.com/uploads/1/3/3/9/133997730/c71f65c791022.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/todebaguso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f8aa12c39a22.pdfIn PDF document text
    • https://wivepeweg.weebly.com/uploads/1/3/1/4/131455463/3728559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_5f91dc61f3221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f8a42bc17a1a.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/5233194.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000099c7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000099c7.bin)
    • https://cdn.shopify.com/s/files/1/0498/3809/6546/files/marriott_hotels_near_cherokee_casino.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/bipeler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/aci_301-05_section_5.3.6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7078/3129/files/concentracion_de_soluciones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17a63d65-77e0-4c31-bedb-92695886c049/xulusekibevabipikelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/804f5faa-765a-475f-afcf-5373fb7289ec/jogafuwudum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7927/3115/files/edema_solido_facial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/dorikabuwanesanunijokinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c9a2743-38fc-4825-bfff-2691177b5c15/league_of_legends_rengar_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5db42a8-90ff-4941-aee8-ec1dfbc9849a/5464267446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1450ea49-9720-4ef2-a542-2b2fe20389f6/81720721325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1016/5416/files/download_restaurant_story_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6898/3969/files/83143327061.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/business_administration_and_management_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/9122772358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3120/7837/files/dofepukajapaxajazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1448/9765/files/manual_bottle_filling_machine_for_liquid__cream_5-50ml.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 extracted file (font_00_sfnt_off000099c7.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000d150.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000d150.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C7 4944 bytes
SHA-256: dc9b50fb86ddb8ab2cfcaf11a047af42313cea9fcdc57fd036ff82066bb32f29
font_01_sfnt_off0000aaba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABA 11264 bytes
SHA-256: 036fb3eb24d6ba79e73cd8e5c30696c10fafb762360be92f59a2cd45e64107c5
font_02_sfnt_off0000d150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD150 16036 bytes
SHA-256: 18601d9271fe4683d438f2013f2509f505864d17f9a6a2ee19315658488ac657