Malicious PDF — malware analysis report

Static analysis result for SHA-256 15827982ff17fd0f…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 10:53:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9b8cf3d95f84cc823ce88a4f7c9a1383 SHA-1: ae95fd07866b540a11f6b63e6dce15afccb6b31a SHA-256: 15827982ff17fd0f3a4df317e3031baa68a13057b6389d7b7f9e0c532c85793f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/406889139/static-moonactive-net-link-game-hack PDF link annotation
    • http://ptts.pl/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/rbx-place-free-robux_GM431946152.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_003_off0000489f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489F 25628 bytes
SHA-256: b76ad5a31de74ef6947ee5cf3d437d6fd09ac2dfffa28576e76ac0a7ac2393e8
font_01_sfnt_off0000832e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832E 17828 bytes
SHA-256: f1c4875db67d08a7f015f46d5edb04ada9e055205be7e1056ba7c59babce098d

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