PDF static analysis report

Static analysis result for SHA-256 673333aa0e60f41c…

SUSPICIOUS

PDF

34.0 KB Created: 2021-07-04 07:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3639765d8de3d0540faa2efbabc51036 SHA-1: e72fbd48279ddf903c5a401a5e6ec55b6949f497 SHA-256: 673333aa0e60f41c5eaa018fcfbe0ebc4df3c75ea64276703f5cfcc80258cc65
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that promote free in-game currency and hacks for games like Coin Master and Roblox. The primary URL, http://netcdn.co/app/406889139/coin-master-free-attack-game-hack, is directly linked to the lure. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. While no scripts were explicitly extracted, the presence of external URLs and the ML detection suggest the document is designed to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.co/app/406889139/coin-master-free-attack-game-hack PDF link annotation
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/descargar-roblox-hack-2397_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-strucid-battle-royale-aimbot-hack_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-roblox-purchases_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/swagbucks-for-free-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/2021-free-robux-hacks_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-no-waiting-2021_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-games-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/open-coin-master_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-email-rewards_GM406889139.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_002_off00003085.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3085 22556 bytes
SHA-256: 7d32f93250d48265ac6da95050d2d43e73c61edd93ee8257b8e7fe7f52679531
font_01_sfnt_off00006286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 18168 bytes
SHA-256: 75c6e626bf291d9515ad923a84f4b1e9b9d7c6cab114e50afbb6b6b9866eb8df