Malicious PDF — malware analysis report

Static analysis result for SHA-256 3174476aa85aac95…

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 19:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1bfcbdfaf2f1102f1977dc5f161dd1e SHA-1: 40e0ab9a992597c54072b6ceb727f94b8c5063dd SHA-256: 3174476aa85aac954ac3805427cafa1415fd8a69333d462cbb1aabb243357f06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9432

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/479516143/minecraft-bedrock-download-pc-free-game-hack PDF link annotation
    • http://www.jsvillas.com.tw/assets/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0B 25164 bytes
SHA-256: a577697648c2c125e54d9212159ac428f818ccf4a20d8a2a53476c93ab53a1eb
font_01_sfnt_off0000859b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F85 18828 bytes
SHA-256: a264e86136786ea36ffe75565c0a75df0f10437a5612c71f93040c03370f29a0

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