Malicious PDF — malware analysis report

Static analysis result for SHA-256 33287dfd4a53b5a1…

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 09:38:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f198b9295c9671e38683827bfec3d8b SHA-1: d66760226368b7b0b029cb62bc26c0eba71f480b SHA-256: 33287dfd4a53b5a13db7b09ee86d85cc8266e5d467adc28be25546def0a2663a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, ultimately leading them to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

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 https://netcdn.xyz/app/431946152/hacked-roblox-game-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.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_off00004a01.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A01 29600 bytes
SHA-256: 9755c2b05ab7060c57f6acb1d2f3e9655fbdd9a4e697c3148ba811213939e44e
font_01_sfnt_off00008cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB8 18616 bytes
SHA-256: 43b97d228c7cd7fd1bba8da0f91b6cd3fc6d824cd96cfd86ffb9da3a0224d155

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