Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d1319e588a12f0…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 10:51:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cec138b74490e4291b0a7b7d5adc98e6 SHA-1: 07d4cb41db86d48418de10dd55586c2eddef7837 SHA-256: 14d1319e588a12f0ec392432b83faf4c7ae85e9dc9b9dbbc68aca6aefdf97256
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that explicitly advertise 'free generator / game hack' and 'free coin master gift link', directly leading to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary lure is to trick users into visiting the malicious URL, likely to download further malware or engage in credential harvesting.

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.tw/app/406889139/free-coin-master-gift-link-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/hack-parkour-roblox-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/resource-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-jailbreak-free-cash_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/tiktok-free-unlimited-likes_GM835599320.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/gain-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-accounts-2021-new-method_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-anything-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-how-to-get-in-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-spin-hack-apk_GM406889139.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_off00003151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3151 22920 bytes
SHA-256: ec8d053f3b22175f35f266e4386ee169d93c2b7894cb608ad4d07e76ebc791fb
font_01_sfnt_off000064ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 18168 bytes
SHA-256: 779bd4abda0857f33c27082209fbf2247460e8b4ef243ccf1fc9add989fa47a5

Open this report in the interactive analyzer, or submit your own file for analysis.