Malicious PDF — malware analysis report

Static analysis result for SHA-256 2228e4e8a94cd1e5…

MALICIOUS

PDF

34.9 KB Created: 2021-06-20 09:44:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 13b65f1ba6d7076e595c7b552585f793 SHA-1: 085d498ff39c38385e027367f84c963175faf982 SHA-256: 2228e4e8a94cd1e5b90aea384c245c036331ed78caa9cc3d5553bf9a97143995
160 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'game hack generator' which redirects to malicious infrastructure. This infrastructure hosts multiple other PDF documents, also related to game cheats and hacks, suggesting a phishing or scam campaign. The ML classifier strongly indicated maliciousness, and the embedded URLs point to known malicious redirectors.

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.co/app/431946152/how-to-hack-in-roblox-games-on-computer-game-hack In PDF document text
    • https://miraller.com/upload/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-hack-999999-robux-2021_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-one-piece-rampage-script-hack_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-hack-coin-master_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
font_00_sfnt_off00002f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F73 22520 bytes
SHA-256: 6ddc28f20794e9c946e73fe9a23439f3fc4462043aa709109674e9d8e8742af9
font_01_sfnt_off000061d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D1 19500 bytes
SHA-256: 4203e0d1544f87cff6918f15def598190defc57097a9cd0fc71f931f0c115e53

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