Malicious PDF — malware analysis report

Static analysis result for SHA-256 607325d3cea7a360…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 11:41:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7e2ade4ea017288221273d78575603f6 SHA-1: 35b70aad92699288b930601d2fcf087a1737eb92 SHA-256: 607325d3cea7a360738237f319ae0116dfbf701bebd8c40165d2b41a18634e63
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free generators, directing users to a suspicious URL. The document also contains instructions to disable security software, indicating a malicious intent to bypass defenses. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious document designed to trick users into compromising their systems.

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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.tw/app/431946152/roblox-free-robux-redeem-code-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-roblox-com_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/tiktok-free-2021-likes_GM835599320.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/banned-from-free-draw-2-on-roblox-for-no-reason_GM431946152.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_off00004f97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F97 25968 bytes
SHA-256: 46e67c7464f7a1d6eae64719a945c8a1a3ece2609b38afca92d2550be431e863
font_01_sfnt_off00008cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAE 18524 bytes
SHA-256: 28059590d372224246cc8da5d11c78ee7226da960fa5b9a4e07ef6c8fb6a1463

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