Malicious PDF — malware analysis report

Static analysis result for SHA-256 226a6d031fff5135…

MALICIOUS

PDF

46.2 KB Created: 2021-05-12 13:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7b084cd2acdc2f31b09efbf7e126e55a SHA-1: 6a08d5b2d97a2aae672863ca9c2b5f2ff26e1aa2 SHA-256: 226a6d031fff513578823d1f5abaf74b006e42f092e689d158a25fd5ee7e8bab
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 0.9432

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.xyz/app/406889139/free-spins-and-coins-coin-master-facebook-game-hack PDF link annotation
    • http://aessentia.com/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://aessentia.com/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://aessentia.com/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://aessentia.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://aessentia.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004891.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4891 26704 bytes
SHA-256: 68b12464ea28727da526fdc817d7b034277dc95abc4d6b2db6a49a6db99f62ef
font_01_sfnt_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 3592 bytes
SHA-256: 8205e3b29cb44f91c42e08b5d0bed81c74c8dcd273656a00c726b07d80f6778d
font_02_sfnt_off000091e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E7 18388 bytes
SHA-256: c259822e3b8381453156a43a7e816a9acef9d9e845b894db8a1ad224a94bdcc2

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