Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ac7bf71933f70fe…

MALICIOUS

PDF

49.0 KB Created: 2021-06-10 17:46:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: df9d8e4c36c00f87f6c798b14c6e8a82 SHA-1: 3078b3a9b54d8e1e7bc6545b93f605f8b92f1f6a SHA-256: 6ac7bf71933f70fe5b61d05099c22783a221d9d887218bf087c9ebe757dcc257
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. These links ultimately point to URLs that are flagged as malicious or associated with known redirectors. The presence of a download button lure further supports the malicious intent of directing users to external content. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

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/hack-de-allahua-kabar-roblox-game-hack In PDF document text
    • http://montchanintt.fr/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/tiktok-free-3d-model_GM835599320.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-free-robux_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5098 27324 bytes
SHA-256: 8454ae4517009c47e2950a026e09947cbf39b9507b462d3cf3ce0df24691d84f
font_01_sfnt_off00008f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F10 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 18656 bytes
SHA-256: 4c82da7569abbefd55c264ae68cb2c993826810530779e03e2820f6235360a20

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