Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c02f075d16154f5…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 07:45:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 86e40b5ef907fbab9f968382974fff37 SHA-1: b72e9a88c758872df5bae8e2f2cd879c3453f9b6 SHA-256: 6c02f075d16154f577c865e41546af8a17cae8145db21a3cfabee9ef59abe933
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 0.9748

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 https://netcdn.online/app/431946152/roblox-forcefield-hack-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005011.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5011 24464 bytes
SHA-256: dd615aba042bee91ebe905c48528baba86c4b6c97338e88e8558c78fe6b5dd31
font_01_sfnt_off000087f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F5 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000091e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E0 18640 bytes
SHA-256: 9d9c14670b8f85013690dcf7f78d8728d71fc157173a9b6561f58127cb7d41bf

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