Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f60b2ddcae81ae6…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 15:39:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9456389f98ec77c12f29e1ac1fc80542 SHA-1: 7a788ab97ee0e816fe1be1b5f1ad465731a91670 SHA-256: 5f60b2ddcae81ae6a4e8cdf8404375516edeabdf47cc0e0347c04fd95a530fc5
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/free-robux-generator-2021-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/autohotkey-hack-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/can-your-roblox-account-get-hacked-by-cookies_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/increible-hack-robux-pastebincom_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-working-robux-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-clothes-on-roblox-2021-ipad_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-hack-reason-2-die-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-pink-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
font_00_sfnt_off000031aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AA 22164 bytes
SHA-256: 3edb26f5c683b2349e202a5bd2ca58a6641d0ef4a11c2f70def039d98a6dbaa0
font_01_sfnt_off00006291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6291 19224 bytes
SHA-256: e428ca4c21c8feda58ff9d2cee9e63eb7b19a929803cf1f6eebeef0755d1c14a

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