Malicious PDF — malware analysis report

Static analysis result for SHA-256 001759b7558a5f78…

MALICIOUS

PDF

88.1 KB Created: 2021-04-07 17:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93aa8d298157b44b2517ea115c586e63 SHA-1: 70b9b936270201ee00ae7cebf0893a01011c2cb7 SHA-256: 001759b7558a5f78218f6e117d0f902d88001a5299924378e95f82ed0cfd0857
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the presence of an external URI suggests the document is designed to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/123?utm_term=abyssal+commander+sivara+hc+guide
    • http://lovepositions.info/blade_babji_full_movie_teluguoz2vd.pdf
    • http://generatorsale.ru/wotekiwuzefebusawekudukulcfef.pdf
    • http://yesstore.pro/ejercicios_complementarios_primer_grikapx.pdf
    • http://copyrightnotices-form.com/what_you_think_buddha_quotesf4ui4.pdf
    • http://mastericy-chistoty.ru/paliwataxaeffyo.pdf
    • http://seomagnat1.online/jezesorilegemok3ago.pdf
    • http://todayshop.website/15199881369nccam.pdf
    • http://qrettalq.online/washington_state_covid_cases_today6hahv.pdf
    • http://fringigejy.site/fatigue_stress_concentration_factor_kt6052w.pdf
    • http://uscovidcharts.com/lekobejeziiolmm.pdf
    • https://cdn-cms.f-static.net/uploads/4471095/normal_60461b7911cb4.pdf
    • https://static.s123-cdn-static.com/uploads/4421944/normal_600354c6a09b4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tevomenil/35103340363.pdf
    • https://s3.amazonaws.com/temujonuwu/vernier_caliper_reading_exercises_with_answers.pdf
    • https://s3.amazonaws.com/xeroguru/6462308092.pdf
    • https://uploads.strikinglycdn.com/files/a62a7890-693f-45cc-b3df-7e59e7e5aff8/philosophy_of_social_science_definition.pdf
    • https://s3.amazonaws.com/jozetej/95780879718.pdf
    • https://uploads.strikinglycdn.com/files/c26e6bbd-3eea-4873-a06f-9735a2958385/sumuzatoda.pdf
    • https://uploads.strikinglycdn.com/files/b849b627-d218-459c-95a7-0996af9f385a/best_learn_to_draw_ipad_app.pdf
    • https://uploads.strikinglycdn.com/files/238a3568-2293-4ddb-9608-852614ef693c/libert_paul_eluard_analyse_3eme.pdf
    • https://s3.amazonaws.com/lopadivupudexa/employment_news_paper_23_feb_2019.pdf
    • https://uploads.strikinglycdn.com/files/9986009f-bc7f-4f69-b71d-78e42ca6675b/sig_sauer_p938_9mm_review.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a1a.bin
3b6438e4b2a1375a7b836179823a9eb76d9304906c31d2ebf8f4a014f1a0c53d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A1A 5644 bytes
font_01_sfnt_off00012d28.bin
05388a0431eb4a3d9ca7d9c1594304cd924b7fb4e3787a205dca8383359c7115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D28 11216 bytes

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