Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aee3f0172dc718a…

MALICIOUS

PDF

39.8 KB Created: 2021-05-21 21:19:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a90a488d61f1840c1f80b8ce6ffd8bdf SHA-1: 78cc265c19268f081b0c724de2a9cc4f3554ca24 SHA-256: 1aee3f0172dc718adffcca62ed368acc4cd2d489f46a2dd7247fbdd1a432d7e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising "free generators" for games like Minecraft and Coin Master. The heuristic PDF_GAME_HACK_REDIRECT_LURE strongly indicates this is a social engineering lure to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/minecraft-hack-mod-game-hack In PDF document text
    • http://e-learning.min2kotapalangkaraya.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.min2kotapalangkaraya.sch.id/__statics/gudangsoal/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://e-learning.min2kotapalangkaraya.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://e-learning.min2kotapalangkaraya.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.min2kotapalangkaraya.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.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_002_off00003775.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3775 24864 bytes
SHA-256: 047478e80714e65b8bfaccbae0c41569cbcb3d1f335b82a7aacebd8fea8cddc3
font_01_sfnt_off0000703e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 3032 bytes
SHA-256: 7fdc853c8791efcb7f6662f717f5eaaf7a203a7d8717a6b2666508a06a783d43
font_02_sfnt_off00007ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC8 18056 bytes
SHA-256: c98163390533840513273057c02ab8b0002c23ddfc36b9b9583c7d176bc18763

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