Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb1b0f20c6c204d…

MALICIOUS

PDF

37.6 KB Created: 2021-05-26 08:16:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4d0e368803f0ff9a4781d273d471d44a SHA-1: 60eabe4bf2de16580e6081e69c1ce1f892dffe73 SHA-256: bcb1b0f20c6c204d22b25e32695793c05ef90bfaa27519a8b72d55aed1fdca20
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to sites offering game hacks and generators, a common lure for malicious downloads or phishing. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution to facilitate the redirection or download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.xyz/app/431946152/sop-free-private-server-roblox-game-hack PDF link annotation
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003576.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3576 25276 bytes
SHA-256: ff7953bf84794d368794b0f5af47b1f948ec81358d59a1ac4bd9228b93fd64aa
font_01_sfnt_off00007024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 18844 bytes
SHA-256: a259e483ee7f0339b6a02b44484d6e950658fb82c046beca47be9c3a441b90f2

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