Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd012dd8f8465954…

MALICIOUS

PDF

50.5 KB Created: 2021-05-12 20:20:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ca9ffcbbd178373ed4eac5981dac3aab SHA-1: ab599ed62be90058f048a378cab956ebb1e83c19 SHA-256: bd012dd8f84659547409cef2a45f3275ce25a29e00eb77c99cdf87d2bd1e8328
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 0.9979

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/431946152/free-robux-generator-2021-no-human-verification-game-hack PDF link annotation
    • http://www.mosaikshop.at/images/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-cards-link-2021_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_off00004e6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E6B 37392 bytes
SHA-256: d83227fb7ffdba21400b2ba91bcbfa8c03627f0d77ee2a86aba168163da779d5
font_01_sfnt_off0000a0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F4 19260 bytes
SHA-256: c7b90a5cfba5c375f14137d6940681acb1ecffd006539937a4c5badd529f0ccc

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