Malicious PDF — malware analysis report

Static analysis result for SHA-256 6900cebf86c04b09…

MALICIOUS

PDF

50.5 KB Created: 2020-10-02 08:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 927aeda886575a85de2444b1cb3d6e50 SHA-1: 9538f497e59b5a6120ae4b4e225fbfda4e952c21 SHA-256: 6900cebf86c04b09e00f88ce61b0984a092f75ed6a070066d176bdf424652c1e
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://cctraff.ru/strik?keyword=hey+jude+piano+part In PDF document text
    • http://zezobivi.cjsclimbandplay.com/uploads/1/3/0/9/130969204/6614162.pdfIn PDF document text
    • http://pavid.georginaemilybeauty.com/uploads/1/3/0/7/130775350/rugodipiwadusadux.pdfIn PDF document text
    • http://vatodazeg.iclad.org/uploads/1/3/1/6/131637136/puvarorupej.pdfIn PDF document text
    • http://files.d-fligt.com/uploads/1/3/1/4/131483550/ef95b32e1.pdfIn PDF document text
    • https://site-1040244.mozfiles.com/files/1040244/weruw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1bea675c-6402-431b-adca-c4d85caa2b94/datemunesanupedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f67edd29-3e54-4c65-899b-d75f2de91063/48569378522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef08ed56-f54a-4c31-a7c2-33a7e2ff22fc/57858095213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf9be6c-0b5a-4c13-8e54-7c7d987f170b/9502898999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03da47a1-547e-4f6a-92b1-af9bc89bae51/39596387328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7788/8925/files/interrupt_service_routine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/doubly_linked_list_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0879/2475/files/binti_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3657/6410/files/go_math_grade_2_chapter_5_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/this_is_our_story.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

Related samples 6

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_off000079be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BE 4764 bytes
SHA-256: d9415532f21694011bc2b488354aea617dba5ffbead7a90c906346924fbe38d5
font_01_sfnt_off000089fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FE 10976 bytes
SHA-256: 41f61820e4b0cc84bdd9c07237cd22f3567e78a68d0e5fb21e6a5e9aaeeabe81
font_02_sfnt_off0000af76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF76 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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