Malicious PDF — malware analysis report

Static analysis result for SHA-256 4894003d20052cbb…

MALICIOUS

PDF

44.6 KB Created: 2021-05-13 21:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3940248ccb60b46014c44c042f914559 SHA-1: 0ebc7d76ce8919522d1406bbf55c1a5a43dbc62d SHA-256: 4894003d20052cbbc8421d3bcba5f2ac3f4166361a8977d7faa09e263383d617
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector at 'https://netcdn.xyz/app/406889139/free-coins-coin-master-game-hack'. The document body and heuristic firings indicate a lure related to game hacks and free currency, suggesting a phishing or scam attempt. The presence of embedded URLs and the nature of the lures strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-coins-coin-master-game-hack In PDF document text
    • https://www.ma-plast.hr/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/claim-free-robux-button_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492E 25032 bytes
SHA-256: 80f12ecb5b88c522258beab28ad7e002f53fd84689921b5fe0b5de0bf45d0e9a
font_01_sfnt_off00008269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8269 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6C 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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