Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce162aff531bc16…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 19:39:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f5e56394e1633300dc793426e0e511d SHA-1: 8cda447ed05bb9c4107c64da3f9d809e703a1b54 SHA-256: 3ce162aff531bc16a7cf5369bfc58940c1c9c78034ac73da5b5e0672bb40a242
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, that promise free in-game currency or hacks. The document body and embedded links suggest a lure for users seeking 'free Robux' or similar game-related benefits. While no scripts were directly extracted, the PDF structure and heuristic firings indicate malicious redirection and a lure for potentially harmful content.

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/431946152/free-robux-websites-that-actually-work-game-hack In PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-free-bonus_GM406889139.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_003_off00004dee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DEE 25344 bytes
SHA-256: ed62b99836a1d195d3b16575f8224c4ef4eaf8c3769aea1dee28576d5bce0439
font_01_sfnt_off000086f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F9 19252 bytes
SHA-256: f49525d2cb353299e95430044cca9c62699809686ebb763340304ea0e82a2cbb

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