Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d9ae703dca833f…

MALICIOUS

PDF

46.2 KB Created: 2021-06-11 03:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 005b7f43980f90bcfb6ed9c87a53d9f7 SHA-1: aa45df4a4159f44f279d6a8e6a0a37b25c834a33 SHA-256: 54d9ae703dca833ffd89e3f49dc9e947c6744beefd6e7a9b93d02f9747f8d967
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to a website offering 'Roblox Hacks' and other game-related cheats, identified by the PDF_GAME_HACK_REDIRECT_LURE heuristic. This lure is designed to trick users into visiting a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-hacks-no-sur-game-hack PDF link annotation
    • http://perpus.wdh.ac.id//repository/near-pokemon-go-free-server_GM1094591345.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/pokemon-go-free-zangoose_GM1094591345.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/rbx-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/pokemon-go-free-zapdos_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000049ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AD 25536 bytes
SHA-256: 54007b73835f3bfbe2c1d294e59cce467f598991e085447f4ba4ecf7256d1a90
font_01_sfnt_off000084c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C5 4120 bytes
SHA-256: 4fea74c9bffea57a0e0cd0bd174db942b06da40ec87432c1d028863a342864bf
font_02_sfnt_off00009240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 18320 bytes
SHA-256: c524db82b3a2f44f7197aa59ab91201012860593f004a846fa1ad6ee68be7a9d

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