Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a5407cfc9d010d…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 18:49:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: da05a8e035aa160c85ed9d1f2ec243bb SHA-1: 1531b5c2b3071f54d8efec364302089d2d720dd8 SHA-256: 85a5407cfc9d010dd598111da383523548c1d9ae1e93dee9015fa343944fb62b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to malicious websites. The ML classifier and PDF heuristics indicate a high likelihood of malicious intent, likely to trick users into downloading malware or engaging in scams related to game currency and hacks. No scripts were extracted, but the presence of external links and the nature of the lures point towards a phishing or malware distribution attempt.

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.tw/app/431946152/free-gift-cards-roblox-2021-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/roblox-hack-999999-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-sun-glasses_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/neon-hacks-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-skin-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-login-password-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-o-get-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-scibt-pack-exploit-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-app-for-iphone_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
font_00_sfnt_off00002f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0D 22404 bytes
SHA-256: 5a776f1cc3d9d2ec45fb8783c78a35eb6da77b7c89dc348c9636eeed99e2cfd6
font_01_sfnt_off000060db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 19452 bytes
SHA-256: ed013c3d93664a4b9b20aa30eb67d7dd1b08017fea55dd7557a5f7b1f4d31c2b

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