Malicious PDF — malware analysis report

Static analysis result for SHA-256 025cb1de3948a8b9…

MALICIOUS

PDF

44.9 KB Created: 2021-06-08 00:31:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9921288a85dbb638d07ec34f901e679a SHA-1: afbe78578e1aa5df854ea83f5238516b3f5b88d5 SHA-256: 025cb1de3948a8b9f9062bc1f6be4d6b70d2ed586ad79cd0f31995a489ce342a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a 'Roblox Hack' and impersonates Facebook, directing users to download a file from a malicious URL. The presence of multiple external URIs and a high ML classifier score indicate malicious intent. The document's purpose is to trick users into downloading potentially harmful software by leveraging brand impersonation and a fake download offer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.tw/app/431946152/roblox-hack-robux-download-2021-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.tw/app/431946152/roblox-hack-robux-download-2021-game-hack PDF link annotation
    • http://szekelymozes.ro/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/gross-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/getrobux-come_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-linux-free_GM479516143.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_off00004d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D43 26224 bytes
SHA-256: 97a55171811e6ec51ff5e09cc41a5a2a508d7955eb97e9d1bc88ecfaf107e45f
font_01_sfnt_off000089c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 19228 bytes
SHA-256: 3c2539c48f149786c060750d21d24e7fd8f70d5bccf42d949ef474c46f3ecdde

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