Malicious PDF — malware analysis report

Static analysis result for SHA-256 32aca0b2c7a5eceb…

MALICIOUS

PDF

40.4 KB Created: 2021-05-21 03:04:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3735494ce1c2cd99da7b524648190e22 SHA-1: 67c027b060ca482953dbd67e24b3f37e7ae48e86 SHA-256: 32aca0b2c7a5eceb455849c1b141da438407b1237ea18a4425505fae821cf536
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 0.7718

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/free-roblox-money-game-hack PDF link annotation
    • http://autoskola-scp.com/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/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_002_off000031a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31A7 26244 bytes
SHA-256: 73f6676fd610c152b63ae77bdd0b383289877028f575e7e47c5e025a45edcf88
font_01_sfnt_off00006f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F30 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 18324 bytes
SHA-256: 592c86f68d7cfce1f91e7ace661462f05e7807c87c96d21e42ea748452481f78

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