Malicious PDF — malware analysis report

Static analysis result for SHA-256 871d9ad5f7f6c8f8…

MALICIOUS

PDF

45.1 KB Created: 2020-10-15 00:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 556873a61102f1fa0d5ddae1d770fe30 SHA-1: 6a3cf644a7f5d6d04215331b2245df3f04e33b1e SHA-256: 871d9ad5f7f6c8f81633163b6785b8961a06cb31ec45e031532a5e30ae899684
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.cc/pify?keyword=android+app+console+output In PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/74c746afc6.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/balatifi-birit.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/5074999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f876a78da478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87698900ed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f877232642bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f876eb124dae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f8723ebdc82e.pdfIn PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/6063884857.pdfIn PDF document text
    • https://site-1041862.mozfiles.com/files/1041862/photoshoot_app_download_for_android.pdfIn PDF document text
    • https://site-1043288.mozfiles.com/files/1043288/33072146341.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3655/2601/files/maudslay_state_park_trail_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1290/5896/files/bakaweguzuzuvetabito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7623/6950/files/airman_mega_man_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bff972e-4831-4922-92ee-7f90f2be329c/majamamuxojuzewemal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e8b866-5230-4eb8-8f3b-040596c7b9a7/77377855950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d94efc-32c1-42ba-bf0f-86ffcfe28e2f/43007911227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29a745ca-525f-41e6-a4d2-751a4cd8d2bd/mitewomovupoduke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f119d0-a7d6-4777-ad12-e542837b51de/83766150234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9941/6485/files/french_alphabet_flashcards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8098/3742/files/sunbeam_quilted_heated_mattress_pad_instructions.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_off00007240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 5056 bytes
SHA-256: 18ee434b26ff7e292017ba48cc24de9cfcea0bb623cc17d7202e4a7241489bf7
font_01_sfnt_off00008373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8373 10548 bytes
SHA-256: a011a17a92d71c920e9f78e6d01ebbdf8a86be7157a6fda7bee9732284b17a50

Open this report in the interactive analyzer, or submit your own file for analysis.