Malicious PDF — malware analysis report

Static analysis result for SHA-256 edda5f8a0aec9f0d…

MALICIOUS

PDF

34.0 KB Created: 2021-06-25 17:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a4db89f871a1e971be88944d1942f8cc SHA-1: 143c67025daa77986c926f7b46c3560c7d0238a4 SHA-256: edda5f8a0aec9f0dc244d65490f5935fb0118f4d30bdde9debfda1d18702fa24
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.co/app/431946152/free-roblox-gift-codes-game-hack PDF link annotation
    • https://www.sd-olimp.hr/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://sd-olimp.hr/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-hack-2021-working_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-close-snippet-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-without-verification-2021_GM431946152.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
font_00_sfnt_off00002f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2A 21968 bytes
SHA-256: 6a690986dc944f0d8f99cac64ceba50f9d6d4f95a23f5cc5e897da2d68e8fc46
font_01_sfnt_off00005fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE7 19048 bytes
SHA-256: f7085053e6a3e2c0746fd68f03f5700c2bbfdcf122ca999485758280d16f97ae

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