Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce23a792ece47927…

MALICIOUS

PDF

32.7 KB Created: 2021-07-22 00:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6599b54f222424db0134c6dc7af044b9 SHA-1: 23a54033d6d616a7d4f0ad6ccf6d6243dcf2b475 SHA-256: ce23a792ece4792751ea87c92e7ac450aa9c43f04bc5a6b8641fc7b24087fc5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-chromebook-game-hack. The document body and embedded links are designed to lure users into clicking these links under the guise of obtaining free game-related content. The presence of embedded URLs and the malicious redirector strongly suggest a phishing or scam attempt aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/how-to-get-minecraft-for-free-on-chromebook-game-hack In PDF document text
    • https://magistrinfo.ru/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-for-free-on-phone_GM479516143.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_off00002c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C45 22080 bytes
SHA-256: 34204ad4b76e49d08e823314c1c261b1ad46832cf6d9b03a9420b5014b2e6d60
font_01_sfnt_off00005cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFC 18628 bytes
SHA-256: 3a4e3f8378819557dde5b27ff4793c702252829ac96e9550bc2b3bfa5905855e