Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f158c6e1d2a8a2…

MALICIOUS

PDF

50.1 KB Created: 2021-06-02 13:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e975ee3516b016c751d964c2a9f96e76 SHA-1: 22aec01f40a2e8ad1e27474923db319240bc343b SHA-256: 02f158c6e1d2a8a2e0e213a778428c6a0fc2b0e66593b3c22036b365eb5cc6d5
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free items, impersonating brands like Amazon to trick users. It contains multiple links, including one to 'netcdn.xyz', which is flagged as a credential phishing or malware download site. The document's structure and embedded links suggest it is designed to redirect users to malicious websites, likely for credential harvesting or to initiate further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-buy-stuff-with-no-robux-hack-game-hack.
  • 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/how-to-buy-stuff-with-no-robux-hack-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-story-mode-free_GM479516143.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_004_off000050e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E7 28260 bytes
SHA-256: c869e1de2b6b4b9c1e68c39455d9d287554b067361f9eb72aabcaee981454790
font_01_sfnt_off0000916c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x916C 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7E 19180 bytes
SHA-256: f10ea3e73f2fc4fdcdbda4bf6b3cfc7780f2416255106ca59380d2ac3254bb9b

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