Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af2620cffcac3c0…

MALICIOUS

PDF

46.1 KB Created: 2021-06-11 08:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a713ee088d86d7e4535a2fc892ae963e SHA-1: 1cc9f14580c189fb2b67eb188637f52ffcec66c6 SHA-256: 2af2620cffcac3c02c0704ab695b24dcd4499f7a2c59ff04e0ee5bed5f8e78fb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a 'link farm' by heuristics, pointing to sites offering 'free Robux' or game-related hacks. The document body and extracted URLs suggest a lure for users seeking in-game currency or cheats, which is a common tactic for phishing or scam operations. While no scripts were explicitly extracted, the PDF structure and the nature of the links indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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 https://netcdn.tw/app/431946152/free-robux-2021-real-no-human-verification-game-hack
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/hacks-para-tener-aimbot-en-roblox_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/http-blackgamesus-coinmasterhack_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/roblox-cat-shirt-free_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/rbx-sites_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/get-free-cards-for-coin-master_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-roblox-clothes-templates_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-outfits-on-roblox_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-android_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021-android_GM406889139.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-online-games-like-minecraft_GM479516143.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/robux-offers_GM431946152.pdf
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-promo-codes-for-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053cd.bin
de9998f719a5f98ee3b56fb55f129a1850ea8fcb6b84e8d79b0753d76a774438		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53CD 25332 bytes
font_01_sfnt_off00008e85.bin
30d7f9e040c5c500953a9f5c426f76d443238aa3ba71cebc8b401bfa58507e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E85 19336 bytes

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