Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e19b352bcf0b29…

MALICIOUS

PDF

40.9 KB Created: 2021-05-17 11:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: acc0ca6a57ca93e1634b494c4118e8cb SHA-1: 516601d24a444f77d6ead311304235343ccd5858 SHA-256: f7e19b352bcf0b29a969a7d70b75916dfbb770a44b9be524ce3f77bdf4a2df3e
160 Risk Score

Malware Insights

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

The PDF contains a lure for game hacks and free spins, directing users to a known malicious redirector. The embedded link is designed to exploit user interest in free game resources to lead them to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to further malicious content, likely involving exploitation or further downloads.

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/sites-for-free-spins-for-coin-master-game-hack In PDF document text
    • http://www.flotom.at/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://www.flotom.at/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/hack-client_GM479516143.pdfIn PDF document text
    • http://www.flotom.at/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/krnl-roblox_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-hack-apk-with-fb-login_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_003_off00004698.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4698 24720 bytes
SHA-256: 1d8a227f28614bf29a1618e8a19d1c628d3dde0d40a20d8252e715613231dd09
font_01_sfnt_off00007eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB2 17884 bytes
SHA-256: 91ca8f62c0979a078180dc6a81f20f20b88a175a519d6a4650188b448ff1f25f

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