Malicious PDF — malware analysis report

Static analysis result for SHA-256 da639164f92fd580…

MALICIOUS

PDF

34.0 KB Created: 2021-06-17 19:55:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0354aa48c2434a4411edebb6a5bd4da7 SHA-1: 79170b56dd4e997b0e7d4e743c02e582f3928ab0 SHA-256: da639164f92fd580252d210f2b901744c827b09f31d86c7e9ec5a3c552b26db8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple game-hack related URLs reinforces this. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt, likely leading to a further stage of infection or credential harvesting.

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/how-to-get-free-robux-2021-generator-game-hack PDF link annotation
    • http://italymania.ru/images/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/unlimited-robux-hack-apk_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-do-u-get-free-robux_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_off00002e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2F 22052 bytes
SHA-256: 0ef895d138c03accb2b152eae6d92746b8fd5accc037fff8d407200a397f8253
font_01_sfnt_off00005f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F15 19200 bytes
SHA-256: 83b7b2b11f32b1176d9644b0318122953faeb397dc12c8d78e1eaac6a4ea00a6

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