Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f0ee33de02b0b8…

MALICIOUS

PDF

44.7 KB Created: 2021-05-16 07:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: be54275414baaacdd4ceb25d51012475 SHA-1: 3daa96b30728b4175f071cc480b8b03339e1ce0d SHA-256: 71f0ee33de02b0b8e0620e69623a5fbb030f6bbb7e5d5b6b863eeb3fb51f244b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users to malicious websites, masquerading as game hacks or generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack, which is flagged as a known malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack In PDF document text
    • http://stroyproekzia.ru/images/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/wurst-download_GM479516143.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://stroyproekzia.ru/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-2021-app-download_GM406889139.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
stream_003_off00004830.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4830 29588 bytes
SHA-256: 83cf051a8fcbaf9529e0523c88334e1a131b86dc682213235098bb1fc3a81bcc
font_01_sfnt_off00008a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A07 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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