Malicious PDF — malware analysis report

Static analysis result for SHA-256 16981c3e9e96be54…

MALICIOUS

PDF

40.4 KB Created: 2020-10-07 07:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 98afcec265c8720319fbd84511487ec4 SHA-1: fe526d2203fb820184cb848305911bafe38f5c54 SHA-256: 16981c3e9e96be54879545f17e70c7c1ae8197455f7bccfbe77c82bbc13aef6d
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=alphabet+francais+coloriage+pdf In PDF document text
    • https://site-1039688.mozfiles.com/files/1039688/wivekepivuj.pdfIn PDF document text
    • https://site-1037868.mozfiles.com/files/1037868/34048744187.pdfIn PDF document text
    • https://site-1036644.mozfiles.com/files/1036644/9575705851.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/komawisenoliragagoj.pdfIn PDF document text
    • http://files.grandcentralmotel.com/uploads/1/3/1/4/131438260/mugiwazunomo.pdfIn PDF document text
    • http://files.100womenwhocaremedina.com/uploads/1/3/0/7/130776046/xuwaxa.pdfIn PDF document text
    • http://jiroxifak.lexingtonservicesolutions.com/uploads/1/3/2/7/132710567/fojaxub.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://cdn.shopify.com/s/files/1/0496/0809/7944/files/rope_light_clips_for_gutters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/movado_series_800_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2988/0981/files/jyothi_saree_mandir_facebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1412/2404/files/pegeviwakitalopipim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5785/2828/files/sony_car_radio_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dcf866c-216b-430a-afe1-55915b7dce99/33489501491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab61209b-056b-430f-a9c9-ecadd0d197a9/vewesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2bae83-a6b7-4d28-a15c-1934fc064af8/92608730531.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DD 5332 bytes
SHA-256: 35b7c1ad4217f7c1c7fa1e2b1e87d803094175dcb91d2855f57520ab8cb382c7
font_01_sfnt_off000064e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E5 9912 bytes
SHA-256: 2eba27c42ebd55d5c26538eebc87f4f53a5bc201ee3a6c3059210ab2c752bcf0
font_02_sfnt_off0000860d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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