Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5790d41462f1335…

MALICIOUS

PDF

35.6 KB Created: 2021-07-07 05:52:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5901a51127a13638fafe22396f6b3e2 SHA-1: ab98fa3c8e77a6a128034f269e08dfb1aa59e3c1 SHA-256: d5790d41462f1335c098baa2924552b60cadc468ec2f7f144aca2521b364f2d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and text lures related to game hacks and free currency, designed to trick users into clicking. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spins-link-may-2021-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites.

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-may-2021-game-hack In PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/cruise-ship-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-free-bc-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-bee-game-hack-to-play_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-no-hacks-joshy_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/hacked-server-roblox-id_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_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_002_off000032e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E6 23020 bytes
SHA-256: d5810bf58603e8e1aadcb714a635f086d66371139c567dca2ea6f8cb23fbe910
font_01_sfnt_off00006686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 18924 bytes
SHA-256: ef212b5cda993b4ecad8fae2f854e205e09bfeaf0789e767c9f8e92b7f4704a7

Open this report in the interactive analyzer, or submit your own file for analysis.