Malicious PDF — malware analysis report

Static analysis result for SHA-256 389ccd4f27a1b7bc…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 17:09:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa7c23b5ba89cf541b6af8ac9f162639 SHA-1: 7a69984617a7ad5c9d084d8b7c0c77b64f1b1815 SHA-256: 389ccd4f27a1b7bc319386f6ec401bbd65f40784eef6db8071e1ba42e6ced881
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a malicious download lure. The ML classifier also flagged this PDF with high confidence. The document body, though partially garbled, contains references to game cheats and download links, reinforcing the lure for potentially unwanted software.

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/mcpe-master-free-coins-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/nre-roblox-adopt-me-hack-script-money-glitch-tizi-artizi_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-source_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-iframe-studio-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-robux-gift-cards-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-roblox-high-school-money_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/como-hackear-grand-crossing-2021-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-gamepasses-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-booga-booga-hack-installieren-deutsch_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-gui-script_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/instinct-online-roblox-hack_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_off00003244.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3244 22544 bytes
SHA-256: 08cb99a366b25650eb086efae42c46ced3e6f2b1ee0ee46fac3487555dc95ec2
font_01_sfnt_off0000646c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646C 18176 bytes
SHA-256: 1693082916f189875d4d64fe848321ecd7215bfa80120e82d4d23c7be60bd4f3

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