Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49ba45b5842dbb8…

MALICIOUS

PDF

76.4 KB Created: 2021-03-02 05:07:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e906d475139355f86577c093d1339622 SHA-1: becf056d14e2f7269e00744d5d3e83e97b5d06a4 SHA-256: a49ba45b5842dbb8158ff1235cbac1d1949c4393586d6a3ee131452143d68804
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to technical queries, aiming to trick users into visiting the malicious URL.

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://dugedepap.ru/award?keyword=how+to+display+data+from+database+in+android PDF link annotation
    • https://cdn.sqhk.co/suwapipejob/jDhfZG3/jirejofalaresa.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/how_do_i_become_a_medical_assistant_teacher.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482190/normal_6008420556196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_5fe9562a6caa8.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/echo_srm_225_trimmer_head_disassembly.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/bHGBjew/segomaf.pdfIn PDF document text
    • https://cdn.sqhk.co/purizepore/Kjdgejd/totakafokofodateserada.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/gePLKij/create_list_ruby_on_rails.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/h7YjixJ/open_houses_today_blaine_mn.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/michel_foucault_panopticism_explained.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/fuxodol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_6033cc41bf92b.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/hhgjvgc/guess_the_disney_song_baby_shower_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491173/normal_5ffa21be7ee87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fec83e7ccd0d.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/cK8hajf/tilogamevaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 5480 bytes
SHA-256: 39da8e3b12bc71180a4a1e5e15a259d8ba146c55c57e0fd963e075b1ce62604c
font_01_sfnt_off0000f4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F6 15144 bytes
SHA-256: 63f14236b534ac3bd7b3b9c693ae63c09de0a22e62b87b661a850586c202f1ed

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