Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1eaada5cdd58eb…

MALICIOUS

PDF

48.0 KB Created: 2021-05-14 21:15:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e0501ac15fece2114dda9c5180ed6822 SHA-1: e072c5a8944d6c0fa758ec38924db6cb9bf1a712 SHA-256: 2f1eaada5cdd58ebde7ebf2db74ecb7b07d5876284ca4f12f53db04a34d0ec79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free in-game currency and hacks. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-100-spin-link-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/406889139/coin-master-free-100-spin-link-game-hack In PDF document text
    • http://diatecgroup.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-website_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/earn-robux_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/free-roblox-clothes-templates_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 30784 bytes
SHA-256: 3312f6cbbe33135746ea60e0fc1d1f28ca29c2a798304fa61407c127e61faa46
font_01_sfnt_off00008f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0D 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off000098f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F8 18336 bytes
SHA-256: 7e778ef079ae960c06ab48a136ea41e415783434fe93bdbecaa752c7fe43c00d

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