Malicious PDF — malware analysis report

Static analysis result for SHA-256 e160f0d4eded74db…

MALICIOUS

PDF

45.0 KB Created: 2021-04-27 14:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 38620dc293a11a9b62cd26a1d061b6ba SHA-1: 919450413047d612c2e0dd3b989713ea85caecda SHA-256: e160f0d4eded74dba00fb3f111d40afec1f57befdd1bf463e71846ab5eac458f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to malicious redirectors and potentially malicious content, disguised as a "Roblox Greenville Money Hack". The ML classifier also flagged this PDF as malicious. The embedded URLs and the document body's call to action suggest an attempt to trick the user into visiting a site that likely hosts a secondary payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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/roblox-greenville-money-hack-game-hack In PDF document text
    • http://repository.poliven.ac.id/repository/roblox-without-downloading-for-free.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/game-pass-roblox-free.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/roblox-robux-hack-video.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-generator-ohne-handynummer.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-t-get-free-robux-for-computer-nly.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/script-executor-roblox-download-free.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-bypass-cheat-engine-on-roblox-2021.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-hack-peoples-account-on-roblox-2021.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/cool-tshirts-roblox-for-free-sharkblox.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/hack-dragon-ball-rage-roblox-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004336.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4336 28244 bytes
SHA-256: 867cd7d7c46d08c01a5fe2a7de7cb8b665f760459a911137fbd07fb58b82f99e
font_01_sfnt_off000082d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D5 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C86 18792 bytes
SHA-256: 82963c21a65e4ff506c28b77487e5ea3bd769fbeeaded6227dc09dd254cfefc4

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