Malicious PDF — malware analysis report

Static analysis result for SHA-256 6255b4948b90228f…

MALICIOUS

PDF

33.8 KB Created: 2021-07-01 12:09:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5866f5358055e2a8abe197fea2afdba7 SHA-1: b9f22f0595c781eddce3becffcb51b755aaba394 SHA-256: 6255b4948b90228f94403902f94a5dde76b8922003640de7e582182dd0cf5864
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.co/app/406889139/free-spin-coin-master-twitter-game-hack PDF link annotation
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/krnl-download_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/get-robux-now_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/mcpe-client_GM479516143.pdfIn 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_off00002e90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E90 22564 bytes
SHA-256: b7d1c084f243482aad0272475c7a7ba652f75f4a6dc5e7de7e8f95e4f037ef1d
font_01_sfnt_off00006114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 18336 bytes
SHA-256: dbab6a80daafa71f1e061f75c0d82e12a0e9023e308b0b95e4f6d3b99741e995

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