Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef26e4b438424c08…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 09:50:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f07565ea34efe6fc660209f6db44e9ec SHA-1: 0e6a205e39c4f177d4a4273ebe682c0fb65cd5ce SHA-256: ef26e4b438424c0897732526291f2cca9335f9b2272adedbafa960d66728c6ae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text related to game hacks and cheats, specifically mentioning Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/roblox-hotel-elephant-infinite-money-hack-game-hack, is identified as a lure for game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs supports a phishing or redirection attack pattern. No scripts were extracted, but the document's content and heuristics indicate a social engineering attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-hotel-elephant-infinite-money-hack-game-hack PDF link annotation
    • http://new-era.com.tw/image/data/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-roblox-plane-models_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-game_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-person_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-eviction-notice-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 22404 bytes
SHA-256: 3c97bf0463e03ff48169ba5e42e6af03e97b38d3a75e26ff0acfed44427d2d1e
font_01_sfnt_off000062fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 19600 bytes
SHA-256: 5c21b97519c1676d25a0a38415ce360fb5127666cf4bee00efe8de8fb79c66ee

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