Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba710cd28296cc95…

MALICIOUS

PDF

54.4 KB Created: 2020-10-15 20:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b7694090002bd7c22b254528b570a7b SHA-1: e2bb2990f4babbd13d4f0abaf224e79439af5ad8 SHA-256: ba710cd28296cc955b4060568aacce2b425d43aa49492e22c2a76f0e39398e75
124 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.
  • 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://cctraff.ru/strik?keyword=wave+function+of+the+universe+hawking+pdf In PDF document text
    • https://site-1043120.mozfiles.com/files/1043120/basilisk_knight_slayer_guide.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/51922921592.pdfIn PDF document text
    • https://site-1037883.mozfiles.com/files/1037883/3565697508.pdfIn PDF document text
    • https://site-1044312.mozfiles.com/files/1044312/79350349993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5f882482702a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f878d3903367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f871688edf7c.pdfIn PDF document text
    • https://site-1038779.mozfiles.com/files/1038779/14302603121.pdfIn PDF document text
    • https://site-1038879.mozfiles.com/files/1038879/75209852914.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/1/0432/7279/8373/files/2048133012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0723/2158/files/espiritu_de_dios_acordes_barak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7827/0628/files/spelling_forgo_or_forego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6149/2893/files/download_nfs_mw_mod_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2633/5909/files/watch_match_of_the_day_top_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9692/3040/files/minifufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98150fcf-a45a-408b-80cf-ee650e9314d7/kagitis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf577c6a-c4e1-4d4a-bd22-e20277ed7687/dikigisixajepor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2f9978-4201-4b13-9583-d1d842e8af24/10972859901.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_off00009669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9669 5616 bytes
SHA-256: 6b6f01e0883f1b4848179641a0b1462daeec7bce3b8e6c70c279a8db51c6b1d9
font_01_sfnt_off0000a997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA997 10288 bytes
SHA-256: 71e7abcd6556fe7eedf3d3cde9af48a95128d14d7c026dce311533785d519bc6

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