Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2d838ea2de3234…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 10:32:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 45ad584e71a6a53e215cea14e58290a0 SHA-1: a7dba7f6cab6d6ed6b01c81d2fceca153fb8791d SHA-256: 9e2d838ea2de3234f689abaccb2bc2b46f175f280b204f39c808b3a4018ef98f
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks and cheats for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/roblox-hacked-place-database-game-hack, suggests a direct download or exploit attempt. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/roblox-hacked-place-database-game-hack PDF link annotation
    • https://www.e-starmagazine.com/uploads/files/free-robux-roblox-hack-swirl-candy-girl_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-cheat-codes-for-android_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/moon-active-games_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/80-robux-hack_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_off00002f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2B 22724 bytes
SHA-256: 065f13eaf066b5005e2e8c9e462ae9a70387c55b629a50cf3aa4ab124698e049
font_01_sfnt_off00006206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 19256 bytes
SHA-256: d8c67eb5ba090d461fa9e3d5e8f1cfb7fde78b6e2f7b6b3750db3c1bd09eaf89

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