Malicious PDF — malware analysis report

Static analysis result for SHA-256 1330611c8f05aad8…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 10:09:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d6db36b9561372ad91f2ddab0ec4b3b2 SHA-1: 7d55cfe0dece01b3a3e6fc076f7e27c3229ee0cb SHA-256: 1330611c8f05aad8140a6dc3bdbc7e143e7474a6511d4f00fb14b442f05570d9
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 0.9980

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/431946152/roblox-hack-scripts-pastebin-game-hack PDF link annotation
    • http://www.bestbist.com/assets/uploads/pages/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/how-to-hack-a-roblox-account-using-cookies_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/hacking-game-roblox_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-roblox-avatar-stuff_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-website-template_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/roblox-rape_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302C 21920 bytes
SHA-256: cb075173e1ff1da560fda1512920a2566a92aa8bdc01ee376075b546ed94fc50
font_01_sfnt_off00006097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6097 19212 bytes
SHA-256: 46b8535cd4ab0c6c32fa43c13492b1dbcacac03349de8f770ca192070773bb97

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