Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda28ae397b2a9f0…

MALICIOUS

PDF

46.0 KB Created: 2021-06-11 10:08:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 585f5e4b022a23f88646c751b188d1d1 SHA-1: 18b030ebca4df3ac46b950c2e63c8a95bf0b745c SHA-256: bda28ae397b2a9f0bc86c5a519157e4d9693b2f625755fdb127778353fc30718
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 0.9864

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.tw/app/431946152/free-robux-for-lg-phone-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-hack-engine-download_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/tiktok-free-unblocked_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C5 29040 bytes
SHA-256: aded5bd72f7c59e54f7271afed3c0edcf76ef8c2140cb9c92181bbb7af9a3d6f
font_01_sfnt_off0000907a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907A 18624 bytes
SHA-256: b1780e0d090e8e008de1c1296c35d4c72089ad8629693d9dbdd575ec71cc6efe

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