Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b18e13c29e6ec03…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 11:07:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dd2d3a6d52d31383e006bd44f6204b77 SHA-1: 7b24ed280604888ef3550e2bbbdf3ad07138e599 SHA-256: 3b18e13c29e6ec033b92f1f79f6f50e44f7d8d377bec93b314a984356cc76bb3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/how-to-get-limitless-free-robux-unpatched-game-hack. The document body and heuristics indicate a lure for free game currency or hacks, designed to trick users into clicking the malicious link. No scripts were extracted, but the presence of malicious redirector links and the lure suggest the intent is to lead the user to a site that likely hosts further malicious content or exploits.

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.co/app/431946152/how-to-get-limitless-free-robux-unpatched-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-pin-codes-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-cad-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-extension_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/guuudinfo-robux-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-aimbot-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-players-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hexus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC8 22216 bytes
SHA-256: 275e0423aa37e9d751efd21c95609b78b9ada49cabe6d0d7869fc4c965d6e9bc
font_01_sfnt_off00006005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 19956 bytes
SHA-256: cb66089c81b98d4afe811b51b349993ec731bfc3d58ef0babc86837dd4685e62

Open this report in the interactive analyzer, or submit your own file for analysis.