Malicious PDF — malware analysis report

Static analysis result for SHA-256 293ffac7e8bde694…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 07:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 86a28c2957640b470da3479d806c9719 SHA-1: 3666389f0b0301373997520e661dba51c0be7fd7 SHA-256: 293ffac7e8bde69484b727974a3c63162712d4c2bf3db8d306a2882e2eb17f57
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 0.9942

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/835599320/free-tiktok-followers-no-verification-or-survey-game-hack PDF link annotation
    • https://abqyorkrite.org/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://abqyorkrite.org/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://abqyorkrite.org/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://abqyorkrite.org/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://abqyorkrite.org/images/coin-master-fan-page-free-spins_GM406889139.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
stream_002_off00002c3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C3A 22756 bytes
SHA-256: 27c1193f10518a0819ce420434d9c3709bc34f5e7688b40d8e251aae2da68b1f
font_01_sfnt_off00005f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 18492 bytes
SHA-256: 4d8c0727d58b59d2b63319bab821bc095baa93826ac3da826e0a8bde5531d4a4

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