Malicious PDF — malware analysis report

Static analysis result for SHA-256 348e79aedd6652d5…

MALICIOUS

PDF

35.7 KB Created: 2021-07-08 21:55:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d48aa39e84c1f8a7da646041d3c2881e SHA-1: b1996ddf82ead043fd0eb513e6dc61c91a15d1b7 SHA-256: 348e79aedd6652d5acabe9a9a92f31a099afbca2201a572148bb51121bef6ab7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body and extracted URLs suggest a lure for game-related cheats or hacks, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier's high confidence score indicate 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.tw/app/406889139/coin-master-free-spins-link-2021-game-hack In PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-draw-2-roblox-script_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-hack-assasssain-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-sir-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-generator-robux-free-promise-not-a-lie_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-supreme-shirt-free_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/fly-hack-roblox-cheatgg_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_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
font_00_sfnt_off00003448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3448 22808 bytes
SHA-256: 72fecc9630a36a98414fb821fd863502c8f76c64fe23a537c23539d9c5368305
font_01_sfnt_off00006757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6757 18748 bytes
SHA-256: 785b8830476a1dba2603225cf55ebb3d3433825858fb25e5612ad86a59b30773

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