Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf6657e2868524e…

MALICIOUS

PDF

97.0 KB Created: 2021-02-28 21:48:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 10fafd43fc1ee31c5c4508d68a012347 SHA-1: b71cee8a116a8b3b651e4bc80cc3cc9f78740fd7 SHA-256: 1cf6657e2868524ef2b14fee7bad2f1061eef5d0ecd888f58c00f2674319fa4e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, with the embedded URL being the primary indicator of an attack pattern. No scripts were extracted, but the PDF structure and URL suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/strik?utm_term=where+rainbows+end+movie+love PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471985/normal_600ef07310c03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403556/normal_5fee012e73b79.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/bgcRBQf/fort_worth_stock_show_rodeo_tickets_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465015/normal_5fffa47fcfbc5.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/hDig414/cable_size_calculation_software_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380078/normal_60238e1254f8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_6019672e5cea6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473044/normal_5fc7618f3bb0f.pdfIn PDF document text
    • http://vesimawamom.66ghz.com/94537402602.pdfIn PDF document text
    • https://cdn.sqhk.co/lusesito/hcCosjc/princess_and_the_frog_2_trailer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489595/normal_60026cc1370ae.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/2IXtzha/89385281297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_6035347407d66.pdfIn PDF document text
    • http://bidusifekinu.66ghz.com/bikers_kental_2013_full_movie_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465687/normal_603489b69bb2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477615/normal_5fffcaf43c9b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379369/normal_601d764ab5353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474470/normal_5fce7254ea4dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_5fea0404e702e.pdfIn PDF document text
    • https://cdn.sqhk.co/wirumedaba/if5G7UW/14205806391.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fokerek.epizy.com/create_asset_android_studio.pdfIn PDF document text
    • http://pagupim.epizy.com/nj_transit_bus_tickets_buy_online.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_off00013f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F5C 5372 bytes
SHA-256: 971c0709718c3e0d46573e7983c4308765a26e8af24dd5f37599717d5b243eba
font_01_sfnt_off0001518b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1518B 10668 bytes
SHA-256: 7166f6fd7f0a4b516820b64f11e88ee5741c000e665eb2af5398b46444c91852

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