Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc94ec8f5a48ea14…

MALICIOUS

PDF

46.2 KB Created: 2021-05-11 09:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 79571b2873dea6462297594264e29c51 SHA-1: 4433da169e92ad70085defc29c536de1dd0e4a7d SHA-256: fc94ec8f5a48ea144b7b013929bcd77ff08eae2cad4a75fb8afe04984d6f0786
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/431946152/free-robux-discord-servers-game-hack PDF link annotation
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://www.e-learning-min1berau.com/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.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
font_00_sfnt_off00004bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEE 26140 bytes
SHA-256: dc719633c18d7b4c948be40621a99ab4ee5851e3ee0e5c8b4a229b1d24ebd0dd
font_01_sfnt_off00008731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8731 2864 bytes
SHA-256: fc50d3b60b7bea05908810d985fa0ebf2c795d0dc08be6e94fc6be5e11198773
font_02_sfnt_off00009114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9114 18588 bytes
SHA-256: 987077e7e16e583019f60132f52646f266da53a12ca0a8940473eab7507416ca

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