Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a1b45aaa37463a…

MALICIOUS

PDF

44.8 KB Created: 2021-06-11 12:33:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f68d850208faac487e0d90ff70fabb13 SHA-1: a4bc6ba3d2a09548f230bf5f1987937e3c0d2f57 SHA-256: 30a1b45aaa37463aa677e49016203e2153c50ccca789f478cb43a8340633ff55
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks, directing users to a malicious redirector. The redirector, in turn, hosts further malicious PDF files, indicating a multi-stage download or phishing campaign. No scripts were extracted, but the presence of embedded URLs and redirectors strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/fireboat-dynamic-ship-simulator-free-roblox-game-hack In PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-paint-2-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-get-free-robux-the-easy-way_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-sets-suicidegirls-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-accounts-roblox-passbin_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-hack-roblox-on-android-tablet_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-hack-and-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-roblox-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/free-robux-no-human-verificarion_GM431946152.pdfIn PDF document text
    • http://mtsn1kukarelearning.com/__statics/gudangsoal/files/www-free-robux-partycom_GM431946152.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
stream_004_off000051b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B3 24240 bytes
SHA-256: 625468221af6cc1a57a5d2cc37156e8dffa88f9139f2c066ae7c7ce7aa5e25d4
font_01_sfnt_off00008925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8925 19492 bytes
SHA-256: a9ce62c70c38a531691000e1b3f2a91108fe1ab4b0b30e3758a6b9085ee3ed1f

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