Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da13fcda15ff1e7…

MALICIOUS

PDF

50.2 KB Created: 2021-06-08 15:11:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a981bb6cda0446837a8824661de7d209 SHA-1: bdb27fcc2e3e70f507404c0c253ef836414f27fc SHA-256: 3da13fcda15ff1e75af136eba129ccdf2370cab263714e1edfea3cca68678809
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for game hacks and free generators, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded link is a common tactic for phishing or malware distribution. No scripts were extracted from this sample, but the primary attack vector is the redirection to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/pointsprizes-free-robux-game-hack PDF link annotation
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/free-minecraft-com_GM479516143.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_off0000584c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x584C 31048 bytes
SHA-256: 5e46efbec1ef2775c137bdfce42f5e1525d67fe8e5220d1460c43ae9da5f6fe7
font_01_sfnt_off0000a0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E3 18652 bytes
SHA-256: 01fc216c3980496b65380b37bc1e711aefd7a66df44499bcc85f7dd6733b8925