Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0dbe46183596cf…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 08:56:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 186479dca5486dd412e0a0c42df8ef46 SHA-1: e248be5c9c86273607d67648da41cf3082250981 SHA-256: 1d0dbe46183596cf844ff79fc8e183f27f3f54b05acc8d02cd1d39b9157a3258
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs designed to lure users into clicking on links that promise free in-game currency or hacks. The primary lure URL, http://netcdn.tw/app/431946152/free-robux-games-on-roblox-game-hack, is identified as malicious redirector infrastructure. The document's content and structure strongly suggest a phishing or scam attempt, likely intended to lead users to a compromised site or download further malware.

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/free-robux-games-on-roblox-game-hack In PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-car-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-generator-no-surveys-and-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/robux-hacks-tay-take-off-newest_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/hackear-el-roblox-med-city_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-cheat-thumbnail_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-do-you-earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-roblox-accounts-with-good-stuff_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-put-anti-cheat-on-a-roblox-game_GM431946152.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_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 21540 bytes
SHA-256: 477a8c747c06ae1d42b15e53c70eb1ef6e98d972ea85da8b72f2b0a215dc4d33
font_01_sfnt_off0000604f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 19052 bytes
SHA-256: 56f4e65812c403ac511da7c683eb66c8172328fd08918d47063ad90a487708b4