Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2427b0b7d632589…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 14:55:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b388d54b5661f26b254a669eafcb2edf SHA-1: 7f6906506f753f0ad65f837d0ebe381513542d36 SHA-256: f2427b0b7d632589937ec7fd358e3f565798e0152144c897fdce4378ea57d112
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into downloading potentially malicious content, disguised as game hacks or generators. The primary link redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an intent to redirect users to harmful websites.

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-robux-free-no-password-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/nonsei-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-dayz-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hacks-compatible-with-vantage-computers_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/check-crashed-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-hack-100-working-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/wurst_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/2021-btools-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-on-roblox-ghost_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-roblox-lumber-tycoon-2-fly_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-admin-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spins-1-coin-master_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_off00002fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEE 21456 bytes
SHA-256: 07a9ac50b9827bde53f0e4203126b78c677847f58fac83bacbd490f1afc1def4
font_01_sfnt_off00005f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F10 19284 bytes
SHA-256: 06051faf7c740b78a5224cce53dd4664ee4d0a41353646d8ff580b4a7598cec1

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