Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab1d58b79924b49…

MALICIOUS

PDF

36.3 KB Created: 2021-07-04 13:02:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b7114bad6d52e575ce112c4c18f21d3a SHA-1: 10ef619297cbe9cbee9f35bf200499e8498f9e6b SHA-256: bab1d58b79924b49fac765ef92e0d5e20688534e7ac6648d64b3f2a5c2f47126
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/coin-master-hack-ios-jailbreak-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/roblox-credit-card-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-ha-sido-hackeado-por-john-doe_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-hair-catalog_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/circuit-breaker-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-inspect-element-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-ship-code_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-prison-break-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-games-that-you-dont-have-to-sign-in_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-roblox-flood-escape-2-no-mega_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-skyscraper-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-no-human-verification-or-survey-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-rixty-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-pet-snacks-coin-master_GM406889139.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_off00003724.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3724 23168 bytes
SHA-256: c89119e8f95a709e09e39b4dd360525887ca3be571f8d0e7f5aa6e29b2d27244
font_01_sfnt_off00006aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 18404 bytes
SHA-256: 6ea43ab7228851601be35897fda2bac5ac1a9504793d1b77a03120ade39d3544

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