Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf61e750e48a59a2…

MALICIOUS

PDF

79.3 KB Created: 2021-03-21 08:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee6a13d34d4959492f05e425a6152db8 SHA-1: 135475562fc51873459c6b1e3a51b097509ff966 SHA-256: bf61e750e48a59a2ef3853660fc3bd23ca0964422498a72d86b09e216fb5059d
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, several of which point to known malicious redirectors or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/123?utm_term=mai+teri+chunariya+lehrayi+dj In PDF document text
    • http://gawaxoxirerefi.22web.org/baghban_full_movie_filmywap.pdfIn PDF document text
    • http://sekujirimabasas.getenjoyment.net/how_do_you_write_a_tok_essay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385020/normal_6045f6ff48622.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/qzmjdhj/64579823131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_6044f4a16df7b.pdfIn PDF document text
    • http://wotedogupowu.sportsontheweb.net/tisujakakivifup.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/fusionner_deux_en_un_seul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452608/normal_6020f8a1dfd4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428038/normal_6019ae4ba4a9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390680/normal_6052847371503.pdfIn PDF document text
    • https://cdn.sqhk.co/kuniremolu/jcAhijj/notepad_for_android_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_600c994959c21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490244/normal_5fe2f5ca7e67f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://talavapupaniv.rf.gd/urdu_to_english_paragraph_translation_exercises.pdfIn PDF document text
    • https://d67926d6-99fe-48a4-938f-95006fdf2de6.filesusr.com/ugd/21d82e_549b31c2348d47b0947e5632ee9519ca.pdf?index=trueIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_9c74a98c2d6441cf85361e77bf0d7eea.pdf?index=trueIn PDF document text
    • http://rokopuma.epizy.com/widolipasuwedofepil.pdfIn PDF document text
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_5c6659d2a0c24922a599f801d255bc84.pdf?index=trueIn PDF document text
    • http://fobadosox.epizy.com/rest_web_services_java_tutorial_with_examples.pdfIn PDF document text
    • http://zosuvupetod.epizy.com/7537814455.pdfIn PDF document text
    • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_91402d62878e431b995a4bd4713c6bee.pdf?index=trueIn PDF document text
    • https://ef733714-782c-48ea-8991-1bc0bf0c95f2.filesusr.com/ugd/ad2ade_bfc4fbf37930415784737c6b0c3e8da8.pdf?index=trueIn PDF document text
    • http://zijiwaras.onlinewebshop.net/25023498919.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_off0000f1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C6 5032 bytes
SHA-256: 93c7444ff821844b7be83ae8048ddb1f8c738266e34076256b39aa1e01b4c13f
font_01_sfnt_off000102eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EB 1792 bytes
SHA-256: 1b46d5bc4fdbf0d6fe8c63cd43ee594182eadc69f4e4c2f28049411ad73c8202
font_02_sfnt_off00010bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC4 10372 bytes
SHA-256: 3abe8f871b2b9d857bd69f707a96c04965dbf1ecf8b9a70ffc66f30426356b43