Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8670d68ff3f678d…

MALICIOUS

PDF

45.7 KB Created: 2021-06-10 20:55:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 87c467c32dcd2c6f0fc28600d7a38d5c SHA-1: 8405bf2fc435f2b535fd0ddade79dc1b39fdc950 SHA-256: c8670d68ff3f678d85534e36b6dbf16612817c7cdfc3a923b2723c3beaf08910
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free items, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a potentially malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/get-free-clotyhes-pon-roblox-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-hack-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/today-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-free-download-ipad_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-gift-card-roblox-giveaway-live_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-legit-robux-apps_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-com-free-robux_GM431946152.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_004_off0000535a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535A 26556 bytes
SHA-256: f325d07ad52b035d4826f55e83b46136c18917333df0d090ae6cbb5566a52c73
font_01_sfnt_off00008f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F40 18552 bytes
SHA-256: b7e196650def5af47d830c4429dce86ed8a25573d36dadf532f008d73098bcf8

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