Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c6c45564a1edcd…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 23:27:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c095aa66d3e48f927210aa063dba8f5c SHA-1: a38126150d9a6d57376c8afcc922af0f0f72773a SHA-256: 58c6c45564a1edcd7ad0e62db7df29d3a8505b374d09114b2142c29938d2fa6e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to free game hacks and generators, directing users to external URLs. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely leading to further malicious downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/479516143/minecraft-free-games-no-download-game-hack PDF link annotation
    • http://dcmetroapp.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-person_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/minecraft-windows-10-free-with-java_GM479516143.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_003_off000049c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C3 25376 bytes
SHA-256: 5aec3cb1759a53497c2b772fe050e200945992883b1c60fa5b338a415b68cea8
font_01_sfnt_off0000830b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830B 2920 bytes
SHA-256: f7a1dd3569927098a5a89f11e580bf1ccb70534c72bd4fff0e90f33fbdc92274
font_02_sfnt_off00008d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D28 18548 bytes
SHA-256: d4bb8cf493148b268d6586f082826380d12fe2e65f99ddf9ec2ebd5ad80c35a7

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