Malicious PDF — malware analysis report

Static analysis result for SHA-256 739c48f94a00449c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 18:49:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7f6938e6e75e691caf52fb2a93ab5c12 SHA-1: 7e113336f0f0d46031bcd33d8c7d4a906e55c809 SHA-256: 739c48f94a00449cb64d101376fcb043b056ec28a1b2a174804b839032a1d99b
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/479516143/windows-10-minecraft-free-with-java-game-hack PDF link annotation
    • https://ourlady-elearning.com/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-lil-pump-jacket-roblox_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/comment-avoir-un-speed-hack-et-des-roblox_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/i-want-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-into-peoples-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-bleu-hack_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/can-pokemon-go-free-evolve-after-trade_GM1094591345.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
font_00_sfnt_off00002ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFB 21772 bytes
SHA-256: 15c5a03bcd6219beabdde4832b33e9374a55f88b8575c49f397ac356b34b3094
font_01_sfnt_off00005fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD2 19256 bytes
SHA-256: eea5e391dc736ec406f1afee7f54aeea738f4d4feb83311ecd5a02063b60f52f

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