Malicious PDF — malware analysis report

Static analysis result for SHA-256 c334c9e9ddb4d601…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 11:59:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ff2fc1660b3590f79bfbebf6dbc45780 SHA-1: 99ebc8e076392a045b11db214d2b5167ba3beb80 SHA-256: c334c9e9ddb4d60138a0aaf04f3bff167a5aa2fac4cca9b2e0ac592612b3ab3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as offers for game hacks and accounts. The document body and embedded URLs strongly suggest a phishing or scam attempt to redirect users to potentially malicious sites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/roblox-accounts-for-sale-free-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-combine-videos-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-apk-july-2021_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
stream_004_off00005252.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5252 24600 bytes
SHA-256: 6341f6ba775b08abd9ac2d8651d77e8ce0f32de02f0c3d43a37df38c21315ba3
font_01_sfnt_off00008ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC0 18420 bytes
SHA-256: dd3ad9a96696997a3401d80a50f84ab99edff121f3fdc84dc04c1b1c7a8d1cbe

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