Malicious PDF — malware analysis report

Static analysis result for SHA-256 714e8f14e74954f3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 09:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b6ea5cb1ada338051ad026f26e00ab39 SHA-1: d5a6a4e1dadfe727a40b929b088ac20b4cf0b898 SHA-256: 714e8f14e74954f344d3ca8de0fa09eae87ded8cb6c0dd20e8be702a82f8f15b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and generators. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or downloads. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the use of redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-android-game-hack In PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-minecraft-hacks_GM479516143.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_003_off00004ccd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CCD 25340 bytes
SHA-256: 63b8cae1e53355435e8656f6a78d4cc635f82e3e811226faba172418032c9bd8
font_01_sfnt_off000085e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E3 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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