Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3a3e694505a771…

MALICIOUS

PDF

45.2 KB Created: 2021-05-13 08:45:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4b85423cec41ea6d65ac28f4647dbcba SHA-1: a899875ede8874e8818e468c22d02263d6dbd208 SHA-256: 6c3a3e694505a77151d19c150cb7a3dbd6b6a9d698d2ddd3a2b97820cddf3ddf
200 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator / game hack' which redirects to malicious infrastructure. It also displays a fake CAPTCHA to trick the user into interacting with the document, likely to trigger further malicious actions. The embedded URLs point to known malicious redirectors and related content, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/406889139/coin-master-hack-game-download-ios-game-hack In PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-villages_GM406889139.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_003_off000048b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B3 24932 bytes
SHA-256: bc0e838afde8aa0e5f28774be8f86be7bcfeedd205a28e69d9538a50c8919eb3
font_01_sfnt_off0000820d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820D 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D36 18556 bytes
SHA-256: bbb16adb579c26ea7dee9b6864ebd489bd68511943ce27e2a97e1917f0909ab0

Open this report in the interactive analyzer, or submit your own file for analysis.