Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08eb18dfbc7df25…

MALICIOUS

PDF

46.6 KB Created: 2021-06-09 12:27:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2c66073cd4402272853eec96c439a58 SHA-1: fa1dba4b3b71b80cab068cdea62665cbb9af0340 SHA-256: c08eb18dfbc7df25cb33b85b221b0212c1946fbaa7ebbc9949f6488fbc848343
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering "free generators" or "game hacks" for popular games like Roblox. These links are designed to lure users into clicking, likely leading to further malicious downloads or phishing attempts. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

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.tw/app/431946152/roblox-account-crcker-free-v3million-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-gift_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-no-scam-no-survey_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-roblox-2021-xbox-one_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-games-com-free_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_004_off00005122.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5122 27332 bytes
SHA-256: 48d05f134c2778a9779e6102ebe88a18475a18c58c1c5393f06e19c3ea6b75d6
font_01_sfnt_off00008fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC8 19568 bytes
SHA-256: 8e1a53e8a26ef37240787a8ab1758a8a77726bb7411b8addce4cebbd21145118

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