Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc6de7642fcb473…

MALICIOUS

PDF

43.7 KB Created: 2021-05-15 22:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87e1b61b30742eae4f1040e2849d15f8 SHA-1: d9645f38f96494c4d31a3c25dc7c6174fab0a242 SHA-256: 3dc6de7642fcb4737ddde8c2c08e6ea4a35089dc01dddfb8817bddb738e2ef2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for linking to a known malicious redirector, specifically promoting a 'game hack generator'. The document body and extracted URLs reinforce this, pointing to a lure designed to trick users into visiting malicious sites. No scripts were extracted, but the primary attack vector is the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/chisel-and-bits-mod-pe-game-hack In PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_003_off00004d4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4E 26900 bytes
SHA-256: 0fc50d009de9293a9fe182e3f4c3be223674efbb43d87a91d60578b390fb860c
font_01_sfnt_off000088ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 18268 bytes
SHA-256: 21600419038eacf8d17a25e0de8b2d3f701338884b0b037dc932f5efdb40593c

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