Malicious PDF — malware analysis report

Static analysis result for SHA-256 a532c81383566696…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 04:15:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 600dab7bf61888b71cbb1f035e631f4d SHA-1: 30c0b53d110a97b0d2ce4d31465c768c2a5808c5 SHA-256: a532c813835666966175029a15e4394e7f0e5c70ee9f5a5851e52bd380d28edd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a common lure of free game items and hacks to entice users. It contains multiple links, including a critical redirector at http://netcdn.tw/app/406889139/coin-master-free-spins-may-11-2021-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a phishing attempt for game-related exploits or cheats. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of leading users to further malicious content or downloads.

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/406889139/coin-master-free-spins-may-11-2021-game-hack In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/como-hackear-cuentas-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/in-roblox-how-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/no-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/robux-hack-a-scam_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-super-power-training-simulator-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/cheat-engine-roblox-shut-down_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-hack-legend-of-the-bone-sword-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-2021-hack-hats_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-apk-free-download_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
stream_002_off00003093.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3093 22840 bytes
SHA-256: 3fe41b5e873a64eb0e0ebb392373540d8a9cb4038b5df7914e842d362905f002
font_01_sfnt_off00006397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 18756 bytes
SHA-256: 9eb5ccb6a70592a1ddcf6b76efbbef75d346a5967dfc8753af440fa5ff01e3f6

Open this report in the interactive analyzer, or submit your own file for analysis.