Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c2d0e4617f1e4f…

MALICIOUS

PDF

75.6 KB Created: 2021-02-24 01:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d93adef74737ed9ae0b269ee8aa4ba78 SHA-1: ef9d0acd271661be630c866c93e8c3e9062e7c40 SHA-256: 07c2d0e4617f1e4f1705c9cac9ec813716a0c89912189a0323b3a39abb23bc7d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for ClamAV detection. An external URI pointing to 'jacksth.ru' was extracted, suggesting a redirection or phishing attempt. The document body, though heavily obfuscated, contains metadata related to PDF creation, and the presence of embedded URLs indicates an attempt to direct the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=best+hcg+diet+recipes+phase+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387715/normal_602a6e41ca836.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fef605257777.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475383/normal_5fe04a05d86af.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/iaijjiZ/defender_90_soft_top_for_sale_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/cTBja2i/slots_casino_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/fJfhbfn/mario_galaxy_stars_needed.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/figjfv3/dragon_pxv_goggles_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_602ab2272c8c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466175/normal_5fd7c2ae2cb68.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/ghhjhhj/pongal_2021_usa.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/bjicoOC/pocket_warrior_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403415/normal_600659fdaddbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470408/normal_5fca9c03cfe2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408333/normal_5fe02951d6440.pdfIn PDF document text
    • https://cdn.sqhk.co/jorisuzil/dg723gg/old_phone_keyboard_translator.pdfIn PDF document text
    • https://cdn.sqhk.co/derebeduno/Lifjcij/hd_wallpapers_for_iphone_5s.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/ArjbEid/gift_card_cash_exchange.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tidegofavinugaw.epizy.com/cll_guidelines_nccn.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_off0000eb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB06 5484 bytes
SHA-256: c693bc84ce9ac0e3122b97acffd5a29c33a92e5c7aea9191bc76196a0536a81b
font_01_sfnt_off0000fdac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAC 10360 bytes
SHA-256: b3032caf9a81bec2debca2a76740eae9f2749fae9eb4428bd0f096879126940c

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