Malicious PDF — malware analysis report

Static analysis result for SHA-256 7326c407b99d4b24…

MALICIOUS

PDF

48.7 KB Created: 2020-10-22 01:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 01eff30618ed02f33a3d9c05ddfe5b2d SHA-1: 13fb996c9c4f144a6c4a912a20ff1fd331425227 SHA-256: 7326c407b99d4b24181c751eff8f996aef2ec4d99ca06b1cdc3d9975c72f1868
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://ggtraff.ru/pify?keyword=armored+mewtwo+raid+guide+pokemon+go In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f89042c1f2ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f89e480265cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f8e917a14594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f8c3b9a7e43e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8e1121c99e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5f8b4d8f4fff8.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/jamokaroxoj/single_and_multidimensional_array_in_c.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/logical_and_analytical_reasoning_questions_for_class_5.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/dewusebexej.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/jenodipufevumetisin.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/rezoxogowikuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/manufacturing_process_of_activated_carbon_from_coconut_shell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/mdt_lss_chassis_accessories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/xajobep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ab152ee-edfa-4f9a-8c31-8a3a0362004a/fagelizokixedanurujabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c563188-c593-429c-824f-7bcf3e44ed3b/30448861154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acaea62f-72f3-4ad1-a71f-5c23ff8a6e57/rirolovajobemiborola.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB8 5216 bytes
SHA-256: 6ffa5614c419e856098b02e03ec6199e2d036a0b77c018db6faa910b244b8dba
font_01_sfnt_off00007c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C70 10584 bytes
SHA-256: ce4bb3db1fe4e60de29650620e2a714b6c44380fd4a95fb6f8aae925e3710f8e
font_02_sfnt_off0000a087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA087 16060 bytes
SHA-256: d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc

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