Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c1753458c892ac…

MALICIOUS

PDF

84.6 KB Created: 2021-03-16 05:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63cbef30bb42af451e6713830d97da71 SHA-1: eaf7579b205afc99b9157adc95de66433ec937b0 SHA-256: 24c1753458c892ac988310cc5da974959cf3f4b6ec632726d2fe28b5e955fea7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://kuzutuzo.ru/strik?utm_term=adobe+photoshop+tutorials+point PDF link annotation
    • http://natikolom.site/1_pic_8_words_answers6lbqz.pdfIn PDF document text
    • http://natikolom.site/xadagoji7gxra.pdfIn PDF document text
    • http://ejqy.com/kgb_archiver_free_for_windows_7ikyk1.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/71642257790.pdfIn PDF document text
    • http://cyberlife.store/what_is_linear_and_nonlinear_editing14msq.pdfIn PDF document text
    • http://myshoes.moscow/why_is_there_a_yellow_heart_next_to_someones_snapchatljba2.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/fopefemaxisamaxagolu.pdfIn PDF document text
    • http://wordwild-store.com/bolibesomasajev6je.pdfIn PDF document text
    • http://rubisteq.online/wipesafojigijijuwuxabop8gay3.pdfIn PDF document text
    • http://conicppjry.bid/telupokon17uue.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/acid_base_food_chart.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/62363558731l65dq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_b009c4f10f6744188a1017de39972a85.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87bf0c05-6569-4aee-9fce-1d9518e14693/what_happened_at_the_court_case_of_brown_v._board_of_education_in_1954.pdfIn PDF document text
    • https://2a6c20f5-091f-48b5-a5be-bf749919b1f6.filesusr.com/ugd/3794ad_fd48d90ad94842759f973e24567a901e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc25813-beb1-4880-b89e-1df2ed49daa5/gokojibexajuvipig.pdfIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_8e89420a604b4311985465e6ce78ee43.pdf?index=trueIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_3e57f55dbf774439952ebb4a803e24f1.pdf?index=trueIn PDF document text
    • https://a0d2adcf-75bd-42a9-a42a-c23e1c6e9e1a.filesusr.com/ugd/85c99c_5d15a9755ba2466a819cd3087a32419d.pdf?index=trueIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_e84c7007ad644db9a54c0ac46882c575.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/71b9dc4f-6b9a-479c-a955-2c87f03f1bd3/crazy_stupid_love_quotes_for_him.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_201c9bc60530433a8cb4b683511f8954.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87afccb3-71ba-4db2-b41f-cc0178030c1b/when_did_we_enter_ww2.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_off00010d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1D 5176 bytes
SHA-256: 9aedc8f86a8ae34f369581f825c557b68a5cafb20a5c0d37edac99442a1e3ed9
font_01_sfnt_off00011ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA9 11152 bytes
SHA-256: 5551ebf978b3161f677a901c44bceb626a09eecd5c147df3b650df650cbe6aa3