Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7402888deb7685…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 22:29:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e9a56aaca501fa0e58f230f361368e5e SHA-1: 0a48cf10862682e6a93f0777c89eec9efbe1c26b SHA-256: 1a7402888deb76852c535bfe5177a884a12e9f542b35c4753dd03b448b19c475
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/431946152/free-robux-no-human-verification-no-survey-game-hack PDF link annotation
    • https://key8013805.com.tw/upload/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-roblox-places-in-robox-studio2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-mguis-roblox-advanced_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/tiktok-free-followers-mod-apk_GM835599320.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-free-spins-and-coins-hack_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_off00002e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E26 22392 bytes
SHA-256: 9f88a6ef3a5845549661762259dc43841ad7b25822eb91fc6ea115f578fdfc0c
font_01_sfnt_off0000600e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600E 19628 bytes
SHA-256: 09331f1d479b06632facb78648812f66193fe8c97927eaaaed4247988ab7ba01

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