Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e92e71dbbedb153…

MALICIOUS

PDF

74.9 KB Created: 2021-03-03 20:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7b2b3a33139e69dea1054619ab5e154d SHA-1: 32b88e0f9f45a7e336f456b81dc41b8ff5594cef SHA-256: 7e92e71dbbedb153e80d8996f40a01ae61cf6b952eaad62996b1545cc41d255b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. The document body, though heavily obfuscated, appears to be a lure related to financial planner earnings.

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://zajinet.ru/strik?utm_term=how+much+do+chartered+financial+planners+earn PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448346/normal_5feec76bee545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5fda4678b6900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409797/normal_5fd36a58e5a23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365627/normal_5fcd81964836d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389101/normal_6002b44ab831f.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/WoheNjg/super_sonic_the_hedgehog_full_movie_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481516/normal_5fed1117212cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_60280154256bd.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/gTcDheV/toyota_re_panda_baha_hauchi_jatra.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/fhcAiDz/83447903120.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/hLjjBjd/brave_fighter_demon_revenge_unlimited_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/uJiagi4/38018313525.pdfIn PDF document text
    • https://cdn.sqhk.co/mabisurud/jidScgi/426432479.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/seriposuj/android_studio_sample_project_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/wezojuxadesunerakupig.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/irregularly_spelled_words_3rd_grade_worksheet.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/guvajobonulara.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_off0000e7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DF 5448 bytes
SHA-256: 10147c75a20516eb7f8a4577dd9c66d5c2e6549a45f69591f12d27246c6b0f0a
font_01_sfnt_off0000fa49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA49 10596 bytes
SHA-256: 12919082c237bc426ab0fcd7a5cd15c74fe779f1168d2576a6a2acf5414c696b

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