Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad14546c0d50cd73…

MALICIOUS

PDF

45.5 KB Created: 2021-05-12 05:00:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 94c22d5663ed3d1c7006394bd3d09171 SHA-1: 1f7ef9ea32a8c5cc09b1e6948a2edcc47d68388c SHA-256: ad14546c0d50cd739889f8470ac351e695b4ae50241711c9b07c1a4aea95e0e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirector infrastructure, specifically advertising a 'free game hack' for Roblox. The presence of a visual download button and the embedded URLs suggest a social engineering lure designed to trick users into visiting potentially harmful websites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/roblox-premium-free-game-hack In PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B59 25028 bytes
SHA-256: 33cf4176e220b1c9d733e6868cb54b45f3dc837f721aa81088985a7e587b73f1
font_01_sfnt_off000084f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F4 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB6 18620 bytes
SHA-256: 29b072d58d5b3a55b665a3fffae90f40690866f16f9b518bc51084b043f759b6

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