Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5152809c610570f…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 03:56:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 097a8cc73324332be56c2b5c77f14382 SHA-1: 0880da298adbc148149246ef2c57d38c821ace96 SHA-256: b5152809c610570f58def263fee9bd51b24924ab202e448644fee89ae4892593
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 https://netcdn.xyz/app/479516143/minecraft-hacks-xbox-game-hack PDF link annotation
    • https://zszolesno.pl/images/rbx-free_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://zszolesno.pl/images/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://zszolesno.pl/images/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://zszolesno.pl/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://zszolesno.pl/images/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://zszolesno.pl/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://zszolesno.pl/images/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://zszolesno.pl/images/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://zszolesno.pl/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://zszolesno.pl/images/free-coins-and-spins-link-for-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_003_off00004ba4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA4 30244 bytes
SHA-256: 41b8da01f676ac76d5ed209a180dc55dcdf18d38e3ee7aa30fb614f71c0cfbbb
font_01_sfnt_off00008e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 18476 bytes
SHA-256: 08d143bbdffcf64d63a65049f265cbb68e766144a512c2d0a1cb0386676e8729

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