Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d1320a92e076ce…

MALICIOUS

PDF

46.9 KB Created: 2021-05-16 12:19:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 92238f5aca44f97654d2d6c60d929054 SHA-1: bc930d816dc4f0b0f51d5fd6107bd0df0f5e35f4 SHA-256: 15d1320a92e076ce5b72ae89bd4d6c360c33abf754b9a51b8624eb1f061f01d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, identified as malicious redirectors. The document body and embedded URLs strongly suggest a lure for users interested in popular games like Coin Master and Roblox. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-raid-hack-game-hack In PDF document text
    • http://fmbompastor.com.br/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-com_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/funbloxxyz-free-robux_GM431946152.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_off00004894.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4894 28628 bytes
SHA-256: d0fff96a7b66189e8739d43feebb190263d6ccd8bc36795d780431a46ec17ac2
font_01_sfnt_off000089f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 3412 bytes
SHA-256: 399f8e596b6d0de89a05c453d6dc1802eb2d04e2b17417cd11edc9b6895473c8
font_02_sfnt_off00009601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9601 17888 bytes
SHA-256: 3bcd7f88e9aff6a3f00dfa05e6d37dfcb1a17a5992fabfc54377b1f82d15f42c

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