Malicious PDF — malware analysis report

Static analysis result for SHA-256 15010e4495cb7367…

MALICIOUS

PDF

46.4 KB Created: 2021-05-14 11:15:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2303b0cfd3d33bc9fc0cd986fcd1890f SHA-1: 0ff630e6d0ad76e3c6fc1896b10ff60126ab468b SHA-256: 15010e4495cb736733676121d96e39a3639158b663815e5f756cce4a7fa8d58d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering "free generators" or "game hacks" for popular games. The document body and extracted links suggest a social engineering lure to trick users into visiting these sites, likely for credential harvesting or to download further malicious content. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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/431946152/microsoft-bing-robux-game-hack In PDF document text
    • https://nendientu.com/public/upload/files/whats-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master--hack_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_off000047ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CE 28808 bytes
SHA-256: daf9c516a16061aed52f1e8a0f9472fc9a022107db3727c20a2ea83d57c34fc1
font_01_sfnt_off000087ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87ED 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00009219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9219 18560 bytes
SHA-256: 0a52f6ec51e5479193ac09ac07861dbb509af0702b58d34a0593d6b3312eb5b8

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