Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce130c2d4e8e990e…

MALICIOUS

PDF

32.9 KB Created: 2021-07-06 03:04:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c59eccb2a0b957fb53618ba15d7e35b3 SHA-1: 95082c599f9d4bc8c1aa53ae3beb5178f0a19faa SHA-256: ce130c2d4e8e990e0c85cc2e888dafc03940f0934bae99c59fae0a2cd3c2331a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising game hacks and free generators. The heuristic firings indicate that these links are associated with known malicious redirectors and lure users with deceptive content. No scripts were extracted, but the primary attack pattern involves social engineering via deceptive links to compromise users.

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/wurst-115-game-hack In PDF document text
    • http://library.persadabunda.ac.id/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-unlimited-robux-hack-is-legal_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-jailbreak-cheat-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/tiktok-free-pizza_GM835599320.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-robux-free-for-today_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-font-free_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_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 21848 bytes
SHA-256: 7c324c6e16e0e25f7a968093d3fd40399428b3a47479ebd4023c8149ca394987
font_01_sfnt_off00005d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D88 18312 bytes
SHA-256: aae8f554f9dbfa6de7f67aea7508dd29eac015a7595ddec0685b2a6423b5fdb1

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