Malicious PDF — malware analysis report

Static analysis result for SHA-256 1768163fef207bee…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 06:04:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6eeaa3e451b78e6fff208a7586726c82 SHA-1: 3269e3b1609e062b32804a1bd3a016ddacd0d080 SHA-256: 1768163fef207beebb6c4230cee1aab9d52935b2902f2290deaba3b214c501a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising "free generator / game hack" content. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the heuristic firings indicate a lure to a site that likely distributes further malicious content or phishing pages. No scripts were extracted from this sample.

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/479516143/mcpe-client-game-hack In PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-giveaway-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/robuxian-hack-to-steal-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/cheat-argent-sur-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/gears-online-rpg-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/power-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-admin-download-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/gladiator-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-avatar-items_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-inventroy_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/get-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/diamond-hack-roblox-royale-high_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/pubg-uc-or-bp_GM1330123889.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-gea_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/daily-free-spins-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_off000033d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D7 22260 bytes
SHA-256: 0e58715cf351f3ebfeb22d32486d52c0899d1bad286a11dcb75315dfab20ea46
font_01_sfnt_off0000652d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 18108 bytes
SHA-256: c8b0b382a945d42a24ee610046caad250b3fa0bd75413a760b577ee3708e89f2