Malicious PDF — malware analysis report

Static analysis result for SHA-256 a993ace4de20a055…

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 07:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 15f808d8610d7ac78de6f62d093f521a SHA-1: 077d2bf462c336b9a49a5c117becd39e9ce2bf0d SHA-256: a993ace4de20a0550de7f79d03dc162732baaef1069fba9625e489e7e20aed40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious domain, likely to deliver a second-stage payload. The document body and heuristics indicate a lure related to game hacks and free currency, a common social engineering tactic. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

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/406889139/gaming-dunia-coin-master-free-spins-game-hack In PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/car-spawn-gui-roblox-free_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-unlimited-robux-free_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-create-a-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/hack-roblox-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-pokeballs-in-pokemon-go-2021_GM1094591345.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3412 23392 bytes
SHA-256: 8503688000d0fb2d470004c9194dc434ae3a5746819eb61ee3b0e32b47da08ad
font_01_sfnt_off00006910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6910 18740 bytes
SHA-256: b864314b23136acdbc9cef453e72c763c24c6f69c6a5d08d10340e372cc06804

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