Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d1e49d3fd4aa2c…

MALICIOUS

PDF

46.7 KB Created: 2021-06-01 19:36:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a0e98a6cda5a781ed16f399fb08de9a1 SHA-1: 8808fe23a948037a585146aa1d9de16e63b5acf8 SHA-256: a7d1e49d3fd4aa2c91490bcecf8df3a2b2804a75f9cd47d9f9345a9dfe7881fd
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9832

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/can-we-play-roblox-for-free-game-hack PDF link annotation
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/robux-hack-real-one_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/t-shirt-for-roblox-free-shipping_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/youtube-how-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/cool-exploits-for-roblox-totaly-safe-and-free_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-vip-server-for-roblox-labyrinth_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/give-me-free-robux-plz_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-promo-code-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/pastebin-robux-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-tutorial-mac_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_off0000544f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x544F 26616 bytes
SHA-256: 21b9eb7ef7cce150b2cb03cc104ba86342cb34d750316cdb4fe152f89c824678
font_01_sfnt_off000092ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AC 18708 bytes
SHA-256: f93fce4d02a12e51235d76228f0063f6fa5187ced66755aeadc53fc3ca8aab11

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