Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e45c71b6ceff12a…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 23:07:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a43b23a886672fea1143fee3fac9fe3a SHA-1: 35931c75fc626e4adc10dc67f0ac110fbd8d302a SHA-256: 7e45c71b6ceff12af35ef71fb1693dc75c2409293878a7ae909a5c700241d3c6
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/406889139/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-promo-codes-roblox-october-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/ban-hack-roblox-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-jailbreak-hack-infinite-rob-cash_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/get-5-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-be-spongebob-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-ghost-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/los-hacker-de-roblox-mas-peligrosos_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-pin-codes-paste-bin_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-unboxing-damage-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/lazyblocks-com-free-robux_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_002_off0000343a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343A 22896 bytes
SHA-256: 83e96fc125f2b31ac98ef6b598c0cd2b43d74d3c295d8a0bac75ba3a1c6a6645
font_01_sfnt_off000067d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D6 18908 bytes
SHA-256: 22eea22e93e3a2ab8e7a2e6bfe46b3c4bbbdffc0ed3854b3ba75aeac54633c45

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