Malicious PDF — malware analysis report

Static analysis result for SHA-256 b478a2baf4685567…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 17:50:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 56a52c6961875c45ce9a6c648d953cb5 SHA-1: 5d7113b2af7430a75e3bd0c4d6e99c78c1025e4b SHA-256: b478a2baf4685567fa9bf5f0b45864e416aed44e589d419b992e979eb63142f9
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures for games like Roblox. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector is the malicious redirection.

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/431946152/roblox-sexually-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/babe-free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-money-in-adopt-me-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/asshurtv2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-free-packages-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/music-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/xonnek-robux-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-compagnon-roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-streets-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/spin-and-coin_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
font_00_sfnt_off00002d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D39 22472 bytes
SHA-256: a3b9392560dc8b384fab7f85ab8afc78fe45edb759124dc39fab4833ac3b2ad7
font_01_sfnt_off00005f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 18804 bytes
SHA-256: ac65bc2350733491bf8b1f5a6175b8e6669ededf8897379c42ae9d533bb69578

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