Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e098720a90cb154…

MALICIOUS

PDF

35.1 KB Created: 2021-05-24 15:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: efab64e148f3e3def8c4f231cb0f0001 SHA-1: 49c2c1c967d779fb83cf9fd282c3b6a88753ce62 SHA-256: 5e098720a90cb1545403a326df2737545f48e8607f094c18c2135af11fd2fca2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9648

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/835599320/free-followers-on-tiktok-game-hack PDF link annotation
    • http://poltekkeskhjogja.ac.id/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/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_off000031fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31FD 24316 bytes
SHA-256: 47d6c888565fc352eecc2899f9ebeba910ce33d4d2b1c9b0a26b4591cea261f2
font_01_sfnt_off00006981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6981 17692 bytes
SHA-256: 03131e98da2a54a1a72f5b4aa345640c80e569685032efd5f04fb63d3df01f9e

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