Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8b27b9ad886d2f…

MALICIOUS

PDF

46.4 KB Created: 2020-11-05 21:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 256acdc95aca9597ff33b5f1f580fab2 SHA-1: 8b78f1667a0df9866873df2bb2161fa1ab113d33 SHA-256: ae8b27b9ad886d2f3f5e55e3336f3ec81daebe14e3846c6be30937d4ec33d723
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=never+let+me+go+free+online+pdf In PDF document text
    • https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/fefaxozefog.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/4774448.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/51920.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/b45da34d-a249-4bc4-aace-08d877d94051/mcdonalds_crew_trainer_application_a.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/nevawitifet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879ad21b-be55-4792-940c-754d16b3309e/directv_code_775_and_771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/489bc04a-1d44-4d8a-b097-886d752526f7/62336514689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be700f3b-826b-43ef-b8c8-db6ddcd9ea42/xovebidixifatebokozirul.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/shatterspike_d_d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffd7810-8bee-4aad-b653-6e6b967dd7e4/wexibofedefuziwadefulewo.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/37496952222.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/xifikawobopidalez.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/vapolununuwirinifegiv.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_off0000792b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792B 5004 bytes
SHA-256: 81773eba41ced4099ab5f4dafee7a8b2a11ac1d40f85a316199f3f7718df4c40
font_01_sfnt_off00008a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2F 10200 bytes
SHA-256: 1102e956b1045c15b36bcfff29a017819dbde82101e32b10ef24821f7c6f22b0