Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca64dc0dc0bd521…

MALICIOUS

PDF

45.4 KB Created: 2021-05-19 17:34:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2faed703c8418476e318eee9004dab88 SHA-1: fa8edd2df2c53fd5d4fb234610bded9e2ba3fe8e SHA-256: 7ca64dc0dc0bd521acc31700f46b6a5de492de431240edfbe041ce84716666b8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and Robux, impersonating Microsoft to trick users into clicking malicious links. The primary link, https://netcdn.xyz/app/431946152/how-to-win-robux-game-hack, redirects to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-win-robux-game-hack.
  • 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-win-robux-game-hack In PDF document text
    • https://bazilikum.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45EF 27852 bytes
SHA-256: 6093cc68374fce72f897758501f47e7530a843997a5935cd73ab57d127f75545
font_01_sfnt_off00008501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8501 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB3 18332 bytes
SHA-256: fad00ab28ca32ac720175c1db428ad763f82292df9c4789472f562f51e00092f

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