Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c934830bd9b1d3…

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 01:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1c300d62b4ded4fe2cf03719a52c273d SHA-1: f332a525d95b4837a12e40b6baf20b8164feaf6f SHA-256: 96c934830bd9b1d3c728be3b34de11cfa88612742ef4a0eab61f97df68e548f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as free game hacks or generators. The document body and embedded URLs suggest a lure for users interested in games like Minecraft and Roblox. While no scripts were explicitly extracted, the PDF structure and the nature of the links indicate a potential for exploitation or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/479516143/free-printable-minecraft-coloring-pages-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-link_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-coin-master-android-game_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
stream_003_off00004d4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4B 25212 bytes
SHA-256: f6f7580be84a055b3df3868bcae18bc6ae8579b0618552dfb9c9583e9a354828
font_01_sfnt_off000086c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C9 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off000090b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B3 18384 bytes
SHA-256: b54cebd8b2bbc40deba01da3a93219bb66384243215780ac353a5f98c97c66c1

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