Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc56675113ae889f…

MALICIOUS

PDF

39.8 KB Created: 2021-05-25 07:33:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ea3ad5f59da9668934f56c6700c47d9d SHA-1: ad3dacbbf639af4bbd3d86d91d264aba07e42fb6 SHA-256: bc56675113ae889f0b5ead6968f797ef795cccbba9e0e251817fa9918bc28dcc
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/minecraft-java-edition-code-free-game-hack PDF link annotation
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003740.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3740 25168 bytes
SHA-256: 573d4b10195bf52546fb854c3220b1dd6b0bd78935a209cb79fd4763b2455a98
font_01_sfnt_off00007053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7053 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00007a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4F 18164 bytes
SHA-256: f60a0ad92d00317e2c15f806bb6b4e732b7ddb4bf4afc6afb4b51f1f749874bc

Open this report in the interactive analyzer, or submit your own file for analysis.