Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72ee402d0d7f114…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 13:01:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: fea1067488bc4d95f44d64bb07009391 SHA-1: 397df6e4c301f6802825e2331cd1d51820ddc12a SHA-256: e72ee402d0d7f1149135cd5cd3edf57081681e7748e12012f0809c0d8da32c79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The heuristic firings indicate the PDF is designed as a lure, likely to trick users into downloading further malware or visiting compromised sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to exploit users through social engineering.

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/minecraft-hacked-client-game-hack In PDF document text
    • https://mbbs.hr/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://mbbs.hr/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/pokemon-go-free-2021_GM1094591345.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/cheat-engine-64-roblox-bypass_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-no-buying-apps_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-food-on-coin-master_GM406889139.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_off00002fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF 22632 bytes
SHA-256: 6b920003ef003d48512f7c8f939d64b48fa68cb49121804aad1f2dd4c115f9e7
font_01_sfnt_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 18272 bytes
SHA-256: 0fd2c848ddb47650564216b877fc40ab0e75fea84b18b99b3308064a801b9109

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