Malicious PDF — malware analysis report

Static analysis result for SHA-256 7580ff63e3634a1f…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 16:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a61f86726d877b1160ae3912b5515f12 SHA-1: 20fe0ce6ce9bab8aae8af4b4bea53bb02567b561 SHA-256: 7580ff63e3634a1f7d9bd0b09263e68a9e2e6cf206cf170e2876f20f0867618b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'free spins' for popular games. The primary lure URL is http://netcdn.tw/app/406889139/app-store-coin-master-free-spins-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading further malicious content or visiting malicious websites, likely as part of a phishing or malware distribution campaign.

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.tw/app/406889139/app-store-coin-master-free-spins-game-hack In PDF document text
    • https://creationegyptco.com/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-hack-roblox-ios_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-cruise-ship-tyccon-albatros-free-script_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/uirbx-club-roblox-robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-executor-2021-free_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000323f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x323F 22632 bytes
SHA-256: 3415b8f0c1b3a5b1321e4567d48abf1a55e1c17c7deeb5e45987245241fb38f8
font_01_sfnt_off00006501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6501 18176 bytes
SHA-256: 1914c70a1897e8b9d4b02f270e89f6433e610c3e4923e5823734a0b505f54885

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