Malicious PDF — malware analysis report

Static analysis result for SHA-256 d441c97061c6fb8d…

MALICIOUS

PDF

36.8 KB Created: 2021-07-09 03:12:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 767c63b1401aff23d7a8fe75d215eaab SHA-1: 1b785de6104e182a66ac0d142f656c23a83004c2 SHA-256: d441c97061c6fb8d245c6b1d008abad55c4480c2333c3928554ff9ff1584454c
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 0.9980

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 http://netcdn.tw/app/431946152/free-robux-generator-no-human-verification-2021-game-hack PDF link annotation
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/february-22-btools-hack-roblox_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/pls-free-robux_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-2-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-roblox-gift-card-codes-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/dantdm-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/roblox-royale-high-cheats-for-diamonds-2021-hack_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/get-robux-roblox-free_GM431946152.pdfIn PDF document text
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003692.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3692 22540 bytes
SHA-256: 1dee2276d162ca08beb7644e08f1c6536aff54e0b7800c1e9244574233c070c6
font_01_sfnt_off000068b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 19736 bytes
SHA-256: 09f061b847c63ff59f035118bd628253d90c30315b77b042e81f05fdb0d3e9b1

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