Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3bbe3c9ce0e700…

MALICIOUS

PDF

44.8 KB Created: 2021-06-01 17:18:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 61446ba8a6d22671ec5236309bc79eb9 SHA-1: c0837f4e277c1854b5c943221133310115222dec SHA-256: 6b3bbe3c9ce0e7004be47a1048668b1c7ee4c190ef49c3c8e8f2601dc4a2a2f4
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 0.9865

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/431946152/how-to-make-a-free-ad-roblox-game-hack PDF link annotation
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-free-download-for-computer_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/dungeon-quest-roblox-hack-ability_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-pc_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-fast_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/dhow-do-get-free-robux_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/gaming-cheats-robux_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-jailbreak-hack-endless-robbing_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/assassin-roblox-download-hack_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-pin-hack_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_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_off00005067.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5067 25264 bytes
SHA-256: 8a063c1548669722c4f1c56d26d79242d9d2313133b34d5601ef55785607d14e
font_01_sfnt_off00008ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD6 18880 bytes
SHA-256: 8815c10ef905fcb51dece863846df4244c99b9f8e7f5fc00f0404c33db6f072d

Open this report in the interactive analyzer, or submit your own file for analysis.