Malicious PDF — malware analysis report

Static analysis result for SHA-256 848a80d458b1e18e…

MALICIOUS

PDF

34.1 KB Created: 2021-06-25 06:54:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0fb2d67c2d6e19ee35745625fc8bfaa3 SHA-1: c3d9508fcc55b2fded992d970fae0af71cf4fbe2 SHA-256: 848a80d458b1e18e3913055dec021b06b0f99bb97e32213f88f70c7d03068e07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as game hacks and generators. The document body and embedded URLs strongly suggest a lure for users seeking cheats or in-game currency, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/infinite-health-roblox-hack-game-hack In PDF document text
    • https://scraperite.com/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-100-working-pastebin_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-hacker-vs-admin_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/tiktok-free-view-59_GM835599320.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-and-bc-2021-legit_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-any-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-free-robux-800_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-name-hack_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/maxim-games-free-robuxcom_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-free-shirts-and-pants-for-girls_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/rblx-gg-robux-generator-free_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/get-free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-peoples-accounts-on-roblox-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_off00002f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F20 22360 bytes
SHA-256: 6df768f3b09ba55b4563292f9bf22a0c9f158b78c3492c6636146a42a822ceaf
font_01_sfnt_off0000605e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 19044 bytes
SHA-256: ca21db73ff62cc1baad6f9a0a4c880ff3b02c12d75c22ac0088b6511b912d4d7