Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaad0d147ff233d0…

MALICIOUS

PDF

43.6 KB Created: 2021-05-11 17:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c1dde008bcec1b281822ddba0a0e5bd6 SHA-1: f0628c3d5ae59daadb0c85c4b96c1e832715b761 SHA-256: aaad0d147ff233d0679920df28238aadeb5aa8a66f7c1711cceea6a656df3548
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to known malicious redirector infrastructure. The document body, though partially corrupted, contains references to 'Coin Master' and URLs related to game hacks and free Robux, reinforcing the lure. The embedded URLs are designed to lead users to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-play-online-free-game-hack In PDF document text
    • http://techmobil.pl/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-hack-2021_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
stream_003_off00004c5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5F 26300 bytes
SHA-256: a84a54ca4e6b84956d571b31aea4409b70fc4c9a0215bb089e2839244bb3dd02
font_01_sfnt_off000088a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A9 18116 bytes
SHA-256: 72f8f7809eb4a1b9c73a82838ab37455291baaf1e92adfc73e6524a5848e4fd8

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