Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ee0fdd4f62a970…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 15:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d61684d5241aa73c6e04771573a5d025 SHA-1: 0aacf44497d26bb7f499080dc36bfecefb7dda5b SHA-256: 15ee0fdd4f62a9708e784f94b448fff7cd1b27ee25797f5b42e037abc7685e1d
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites offering game hacks and generators, indicating a link farm or phishing attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the document body content strongly suggest the intent is to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the nature of the links and the 'ML_NYX_PDF_MALICIOUS' flag point towards a malicious PDF designed for user redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/479516143/how-to-setup-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-exploit-super-nice-mml-hacks_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/rxgate-cf-redeem-free-robux_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/robux-hack-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/skywars-hack-roblox-sword_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/hack-engine-for-roblox-download_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-robux-codes-that-work_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-robux-and-tix-november-2021_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-devil_GM431946152.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://griyafirdaus.com/ckfinder/userfiles/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000314c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314C 22112 bytes
SHA-256: 0a24263bb095c126c365a96e605e273697c028529d2cc697c4d940c95983c817
font_01_sfnt_off000061a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 18592 bytes
SHA-256: 4b40ee072286608b3d74a0cb4ed346ad8a5977f91bfb22046a7a3c91dcad46b1

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