Malicious PDF — malware analysis report

Static analysis result for SHA-256 bffb8e2e7ad51bee…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 02:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ffed49f00d9afde6eb7493bd407a3913 SHA-1: 2c31b7c34b513ac849c9df00e1c89f1121cecbb6 SHA-256: bffb8e2e7ad51bee3cb6708a550c622602df763b5e684c8fa20a43b0c4c729ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and account recovery, directing users to a known malicious redirector URL. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirector chain.

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.co/app/431946152/como-recuperar-cuenta-de-roblox-hackeada-game-hack In PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/robux-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-robux-2021-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-hack-into-a-lost-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/devil-roblox-tshirt-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-watch-any-movie-for-free-tiktok-hack_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily-links_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_off00003221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3221 21480 bytes
SHA-256: 69c25874b08242bb32077de6b1c4aff58a9939049493d05d5e84702d628a32a9
font_01_sfnt_off0000612f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 19680 bytes
SHA-256: 7eeca05bba762423a485bb474c98d6a97246883e77daf9dcb0fcc5a7f8aaf7cf

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