Malicious PDF — malware analysis report

Static analysis result for SHA-256 563db9cd84632fcb…

MALICIOUS

PDF

44.1 KB Created: 2021-06-04 00:04:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 400f2ae054323cccfc1d1b07dd386d98 SHA-1: f2b7ebaf015501f5c147104ade56892a015be9da SHA-256: 563db9cd84632fcb6d34f9348e2cf2f2ce3ba4286a9e139e02363a9bbcc7a1a0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures for game hacks and free currency, directing users to external URLs that are likely malicious. The presence of MFA/one-time-code harvesting lures suggests a phishing attempt to steal credentials or session tokens. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to exploit user interest in online games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.online/app/431946152/how-to-get-free-robux-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/wizard-hacks_GM479516143.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_004_off00005168.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5168 24624 bytes
SHA-256: d3c6283da5c8bb3afeb6c8fa317462647e272e0335db49bd0480c36f57796dd4
font_01_sfnt_off000089d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D0 18280 bytes
SHA-256: 2eeeedfcb2f224ab556fa0ab031baeab03f86dcbcf90e3baaaf5b6d88536dec3

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