Malicious PDF — malware analysis report

Static analysis result for SHA-256 a725768327ad4c9f…

MALICIOUS

PDF

49.6 KB Created: 2021-06-11 05:07:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ca1c9a467ae2eb511d4f2f2a5cd014b5 SHA-1: d69b02f618dc759760ff1918624264d78175a874 SHA-256: a725768327ad4c9f8bfc1aeca6314c4153c61c06be1b37ae74316efcd50415d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors and known malicious infrastructure, disguised as a lure for free Robux and game hacks. The document body and embedded URLs strongly suggest a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection and potential download capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/get-free-robux-no-human-verification-2021-game-hack In PDF document text
    • http://cepobajodeva.com/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-15-robux-for-free_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/tiktok-free-photo_GM835599320.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/roblox-free-clothes-codes-2021_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/cual-es-el-hack-para-tener-robux-gratis-en-robolox_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000513b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513B 27284 bytes
SHA-256: bfdda3e04d7899fca2359333816802d1e999a4a9264f2bf3bf1f843477587c54
font_01_sfnt_off00008f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F23 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C34 19260 bytes
SHA-256: 107805196c3736a71801906a891eb178d47a67430208840c7676c36da5285467

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