Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7068def9f95bfd…

MALICIOUS

PDF

33.9 KB Created: 2021-07-01 20:58:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 87ae45d0328733e43ed6d5081fc4a303 SHA-1: e8d435958135c787247c819eabaa3ddcba75e0a0 SHA-256: af7068def9f95bfd3da0cfef9eca4529a35c1c79313013212d6ac457943a64da
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 0.9824

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/431946152/free-robux-no-human-verification-no-survey-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-in-30-seconds_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-cheat-on-roblox-murder_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-nicsterv_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-use-undetected-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-speed-hack-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-cheat-piano-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/banning-a-hacker-lol-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-clothes-maker_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-do-you-get-minecraft-for-free_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
font_00_sfnt_off00002c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C54 22364 bytes
SHA-256: c247ff8ecc22da93cec36f7ddaac38dc0b9def7fb20e7cfb0db39e912a3e3aad
font_01_sfnt_off00005e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 19628 bytes
SHA-256: 09331f1d479b06632facb78648812f66193fe8c97927eaaaed4247988ab7ba01

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