Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d95407a6c900813…

MALICIOUS

PDF

77.3 KB Created: 2021-04-08 17:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 698f47d60b7cbf5cd520caf5deb155a0 SHA-1: 20dc731cc73e6ff37f92b44ee8a88cb22911662b SHA-256: 7d95407a6c900813b4df2118c46143d9461a3a9cec1161135b745a6b23b84e09
96 Risk Score

Malware Insights

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

The PDF file 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 its malicious nature. Although no scripts were extracted, the presence of external URLs and the document's metadata suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/strik?utm_term=tablature+yiruma+river+flows+in+you+guitare
    • http://2gusevshop.space/the_language_of_composition_second_edition_answers9gtyg.pdf
    • http://gekifek.scienceontheweb.net/fusionner_plusieurs_pages_mac.pdf
    • https://cdn-cms.f-static.net/uploads/4490122/normal_6015a8d78cb99.pdf
    • https://cdn.sqhk.co/pasezateda/cge0ifB/lobujeluna.pdf
    • https://cdn.sqhk.co/gabadifofibo/5NVzhcY/laviroxopi.pdf
    • http://gepexoliv.medianewsonline.com/dilawe.pdf
    • https://cdn-cms.f-static.net/uploads/4367645/normal_601cb1a671a7c.pdf
    • https://cdn.sqhk.co/pesasotiro/sebibYg/believer_tamil_lyrics_video_download.pdf
    • https://cdn-cms.f-static.net/uploads/4405925/normal_605f5da3f1cd7.pdf
    • https://static.s123-cdn-static.com/uploads/4459791/normal_6006d7f6be63f.pdf
    • http://jofufunobek.sportsontheweb.net/sony_vaio_pcg-71318l_wireless_driver.pdf
    • http://thedopemarketing.com/niwoxuwawaii14g.pdf
    • https://cdn-cms.f-static.net/uploads/4374185/normal_600c6e6b7fc26.pdf
    • https://cdn-cms.f-static.net/uploads/4479462/normal_60403e9a162f2.pdf
    • https://cdn.sqhk.co/gavebibi/gggdgdB/xokudubevurelalawi.pdf
    • https://cdn-cms.f-static.net/uploads/4420767/normal_60349eee9a566.pdf
    • https://static.s123-cdn-static.com/uploads/4368478/normal_5fef15a6adbd2.pdf
    • https://cdn.sqhk.co/takulowizi/ddhEvia/45224219170.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gipebevu.atwebpages.com/bafagozer.pdf
    • https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_e445b72c978341d0b9543037f9fd2485.pdf?index=true
    • http://nejarisiwudu.atwebpages.com/play_school_admission_form_format.pdf
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_c45c723c3b414b4a9aaee3532c9880c0.pdf?index=true
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_1144458e4f634643a25f8da7b403be78.pdf?index=true
    • https://9cc02d22-446e-415d-9686-6e49aadcb3b3.filesusr.com/ugd/aa6a08_e70db6f507da4b81b4398e2b395db582.pdf?index=true
    • 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_off0000ee04.bin
ae4da48d1c08d02bafd6bcaba1d0782378feb38899cac23cf71815c9d00fbfac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 5428 bytes
font_01_sfnt_off00010087.bin
2dfbca07f75cd61fd193076ecf9b916c60b949d0b786adf07507978d24f4410e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10087 10760 bytes

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