Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46bd8093c58890c…

MALICIOUS

PDF

43.1 KB Created: 2021-05-19 09:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a07942d4de25004de52c86443dee370d SHA-1: 14c5d946cca0da8a1ae8dd5dc63d9cfa809a534a SHA-256: d46bd8093c58890c08daa7848d7eb3ce70ce51a11961e739820afafef0072fc3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, many of which point to game-related hacks and modded applications, suggesting a lure for users seeking cheats or exploits. The presence of a PDF URI heuristic and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the document's structure and embedded links strongly suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/wahoo-gaming-co-free-robux-game-hack PDF link annotation
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/rbx-hut_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-game-hack-version-download_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_003_off00004ad6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD6 24652 bytes
SHA-256: c73ec65c4f4137e251204febcecc6edcd39abdad591c5ed9d15d4b9736b29dd5
font_01_sfnt_off0000836f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836F 19272 bytes
SHA-256: 72186c943ebdf5aadbcd95d877410298c2bcf6c8326a7dd5e0ae66436694e568

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