Malicious PDF — malware analysis report

Static analysis result for SHA-256 532fbb2e515e7aab…

MALICIOUS

PDF

45.0 KB Created: 2021-05-10 17:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f5d34b9857c03535ae1b701d2772010b SHA-1: 9a9df961ec26156c9f056f30430dec4efb1a64dd SHA-256: 532fbb2e515e7aab45954fbe9aa395c99f626ab002870fd0f85aae8c5e9a1850
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 0.9952

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 https://netcdn.xyz/app/431946152/aimbot-exe-roblox-game-hack PDF link annotation
    • http://androidthai.in.th/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://androidthai.in.th/images/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://androidthai.in.th/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41A2 28232 bytes
SHA-256: 63db0f8e61fc0e3886c9a91a1b526987894178bde831c6ce859a62e9c781680d
font_01_sfnt_off0000809b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00008dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAD 18268 bytes
SHA-256: a9a3edf919d8e4b80656073fb67e5742f53e98381c25ee0e4c723ed5632f254a

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