Malicious PDF — malware analysis report

Static analysis result for SHA-256 d666cc02a045ead8…

MALICIOUS

PDF

76.4 KB Created: 2021-03-30 22:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba0126966a8f1ab227ac0973af2adb0 SHA-1: d8498b56eb51d0ee958b90507c683b5f11170393 SHA-256: d666cc02a045ead8d15b8e9319fc09a392386f28870b6e3537aab5cab5ee5392
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URL that directs users to a suspicious domain, likely to host further malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to business plans.

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://maypoin.ru/award?keyword=airline+business+plan+sample+pdf
    • https://static.s123-cdn-static.com/uploads/4374700/normal_5fdddcde8e423.pdf
    • https://cdn-cms.f-static.net/uploads/4491445/normal_605c660975bd2.pdf
    • https://cdn-cms.f-static.net/uploads/4458144/normal_60511b7925e5f.pdf
    • https://cdn-cms.f-static.net/uploads/4380084/normal_600a5a73c9db6.pdf
    • https://cdn.sqhk.co/vedanoderifu/e1sILgj/checkers_game_download_for_windows_7.pdf
    • https://cdn.sqhk.co/xomifinetepi/WjiihHa/23001373835.pdf
    • https://cdn-cms.f-static.net/uploads/4477873/normal_5fd8bff9a9397.pdf
    • https://cdn.sqhk.co/lexoxuxoluvi/iihcJ0j/dagamowanikume.pdf
    • https://cdn.sqhk.co/wukufazujuv/ngeoyhh/gezenavetubaxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/megulu/84613305649.pdf
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_db78c2f8e6fc48c198c0a76da6711149.pdf?index=true
    • http://mosakokomu.epizy.com/all_souls_book_2.pdf
    • http://gaditimotef.rf.gd/helping_verbs_worksheet_for_third_grade.pdf
    • https://s3.amazonaws.com/megelugik/90583742551.pdf
    • https://7c3a386c-9197-44ff-a2a0-26a6be1b6260.filesusr.com/ugd/bba797_d601a936858841fab02206342f4f2ac1.pdf?index=true
    • https://s3.amazonaws.com/sonutopexaramuf/16486765425.pdf
    • https://s3.amazonaws.com/pigolo/audi_a4_2010_service_manual.pdf
    • https://692937ca-140d-46b9-9715-018e108c1018.filesusr.com/ugd/2540a5_8ec0ae6d94074d088b8a7ae6641307dd.pdf?index=true
    • https://s3.amazonaws.com/jiwotarotavuz/dragonfable_legion_crawler_guide.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_off0000ef06.bin
dbd6138bae9f84c69da564b02e4d40c53853d876f550d5d3c636f03399dbe794
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF06 5316 bytes
font_01_sfnt_off000100fb.bin
4be4433f0ca654d1e8e189b7bf99f4b6686f99c074ee47fd1513cf6f57d848c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x100FB 10460 bytes