Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd5e47fd7c872050…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 09:09:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1f55d9d8a77bd74b6d1f85ba94bc2947 SHA-1: 5db10455100dab29f1fa69ac8cfe838472b17b64 SHA-256: cd5e47fd7c872050c648460af3dfd93862aec45f90bc2b4429b211798c6f7ea2
142 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or scam lure, specifically promoting game hacks and free in-game currency. The presence of a fake CAPTCHA heuristic and numerous links to game-related hack generators strongly suggests an attempt to trick users into visiting malicious websites. The document's primary function appears to be redirecting users to potentially harmful content, as indicated by the high-confidence ML classifier and the game hack redirector heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/coin-master-rewards-free-spins-game-hack PDF link annotation
    • http://www.ipsiagmarconi.it/images/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://www.ipsiagmarconi.it/images/coin-master-hack-2021-link_GM406889139.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
stream_003_off00004a8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8E 24724 bytes
SHA-256: 0f8334753741caa0c4c52f177e3d92808379aa28f160dc0f134e7a268a94e914
font_01_sfnt_off00008395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 18224 bytes
SHA-256: e3bc9749dc9baa5e723214be821330cae5b6b7c9985655e349a80ec6d91cde9f

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