Malicious PDF — malware analysis report

Static analysis result for SHA-256 6052893156a1ace1…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 12:57:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3d5a324d3078474722434d5dafa88bac SHA-1: 92b2466c0ff248cd3d0c571b0630b9b6bfff2b16 SHA-256: 6052893156a1ace1793c7e0c58bb1b74aa085e79c481e9f908e583eb756ed4d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as free game hacks and account generators. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly indicate malicious intent. The document body and embedded URLs suggest a phishing lure for game-related exploits or accounts.

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/how-to-get-2021-2021-account-roblox-free-game-hack In PDF document text
    • http://new-era.com.tw/image/data/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/demon-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/robux-life-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-promocode-hack-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-denis-roblox-acc_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-best-looking-free-avatar_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/hack-of-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-safe_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_off00002f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F20 22112 bytes
SHA-256: 6e1bc04c5c4ccc56232f3a310be33442679a75f00bf39c7a8da06c197d0e416d
font_01_sfnt_off00005ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 19460 bytes
SHA-256: a6920711f7fe5e030d76178c3c4512fb2bf143e4eaaae86491994aaaaec5fac7

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