Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff9bc354fd42b04…

MALICIOUS

PDF

87.3 KB Created: 2021-05-16 13:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c25e2955016b1e1a8c15de21372a7239 SHA-1: e32274ba9869178cbbe2100b8b33abc4dcd7ee6e SHA-256: 9ff9bc354fd42b0499c6aaee0d5f7ac32a9b39681b3e1c478b5575b815091535
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a phishing site, disguised as a search result for a specific product. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lead the user to a malicious resource, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/strik?utm_term=ridgid+13+thickness+planer+parts
    • http://tibudirowe.mygamesonline.org/75145322660.pdf
    • https://cdn.sqhk.co/pitewomepe/jsThehd/smash_burgers_on_blackstone_griddle.pdf
    • https://cdn.sqhk.co/wovegase/eja8hBT/neogeo_mini_pad_switch.pdf
    • https://cdn.sqhk.co/gujowaxexag/gTybzji/galaxy_on_fire_2_hd_ships.pdf
    • http://gufinatulo.iblogger.org/spartan_and_athenian_education.pdf
    • http://tuzevijubozor.mywebcommunity.org/wkhtmltopdf_page_break_after_not_working.pdf
    • http://majovevalaji.sportsontheweb.net/baby_names_and_meanings_free_download.pdf
    • https://cdn.sqhk.co/miburixegapu/dAhj7E2/cnc_programming_basics_tutorial_textbook.pdf
    • http://sotipidikukunow.getenjoyment.net/pejitefifezofokisun.pdf
    • https://cdn.sqhk.co/wenejusuzixe/bjgFThb/63598143335.pdf
    • http://povulofi.mywebcommunity.org/sda_hymnal_with_sheet_music.pdf
    • http://noxaduva.mypressonline.com/9647193999.pdf
    • https://cdn.sqhk.co/xexisini/dghhcji/lego_super_mario_adventures_71360.pdf
    • http://vaxisezawoged.scienceontheweb.net/microscope_function_quiz_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zidumive.rf.gd/alcohol_52_64_bit_free.pdf
    • https://s3.amazonaws.com/purixifusipelid/sherlock_holmes_movie_download_in_telugu_movierulz.pdf
    • http://temavodagoja.rf.gd/79772852357.pdf
    • https://s3.amazonaws.com/wewiro/irrevocable_power_of_attorney_template.pdf
    • http://valikidaku.epizy.com/bible_verses_about_children_s_duty_to_parents.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_off00011680.bin
a3ef8991e0aac66e82eb305a2188bc1b08a542fe8cc9d75059f550a3c7c14e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11680 5624 bytes
font_01_sfnt_off0001299f.bin
12ebfd0cf9d0af06c0053dce3e72f7d9a1fc2055e83a75ffa22fc8b7efe348b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1299F 10720 bytes

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