Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6276ea81d0e7c23…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 01:38:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f3acf7d2fc749e489ec10196dafe47c6 SHA-1: 21f82c4832a44ad207239368097b26f722523321 SHA-256: d6276ea81d0e7c231f7ce6213f2611fcbda8707aeea7e621755fe7130c84e07a
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to external websites that are designed to lure users into downloading potentially malicious files, such as game hacks or generators. The heuristic firings indicate that the PDF links to known malicious redirector infrastructure and uses a common "free generator" lure. The ML classifier also strongly flagged this PDF as malicious.

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 http://netcdn.co/app/431946152/como-conseguir-ropa-gratis-en-roblox-2021-hack-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/pokemon-go-free-vs-premium_GM1094591345.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-car-in-car-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-coins-and-spins-link-today_GM406889139.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
font_00_sfnt_off0000311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311C 22860 bytes
SHA-256: 664e3b8d3df38326ffc83c0699b88f14ee4576837e8ecb9b0232e4ac545eee52
font_01_sfnt_off00006460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6460 19860 bytes
SHA-256: 4f8da2a0f4f69fafa500c088838517e9c3e509e35ab9544e4330801eb6ded1d3

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