Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6d62377b262fac…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 21:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ce3db97d34fb593a69b2588b51a6c8c7 SHA-1: 93220171ed8888478ed7fec01a8172b79eae319d SHA-256: ea6d62377b262fac236298f6077be9db98bdb4e5374caa7df38e9fcf99e66418
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/bloxawards-com-earn-free-robux-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these 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/bloxawards-com-earn-free-robux-game-hack In PDF document text
    • http://stroyproekzia.ru/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://stroyproekzia.ru/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://stroyproekzia.ru/images/how-to-hack-a-roblox-account-easy_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
stream_003_off0000493b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493B 28556 bytes
SHA-256: 8ac513d23fa82bccb97e990a4b63d3d4546c666158b79d9b8a7d264bf9ba7159
font_01_sfnt_off00008b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2A 18916 bytes
SHA-256: ad6cfd8b97476ff22bd965746e6d59def3dc1c42c07a754b956efad1c533161c

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