Malicious PDF — malware analysis report

Static analysis result for SHA-256 029bbf5e8222be3b…

MALICIOUS

PDF

32.9 KB Created: 2021-07-19 08:43:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a51de3523af947ed67ac799eb6a214e6 SHA-1: 572e7ea145069662813e6e25e07593503fb8b001 SHA-256: 029bbf5e8222be3bf5bf74929719a74c8b0b7301001c0c5fcce6db004eb756da
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 0.9900

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-download-game-hack PDF link annotation
    • https://abqyorkrite.org/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://abqyorkrite.org/images/roblox-hack_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-get-free-followers-on-tiktok_GM835599320.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_off00002a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2F 22464 bytes
SHA-256: cd713428c28046a3630c6a51ead2bafc431ff229bbe283ba08676327c1b8be44
font_01_sfnt_off00005c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C20 19008 bytes
SHA-256: 72e3a65839c32bde970c5e9c108b6cdefe5a1e283205e2ba54e9e9ddd761828c

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