Malicious PDF — malware analysis report

Static analysis result for SHA-256 056285a8b2c6bdbc…

MALICIOUS

PDF

51.1 KB Created: 2021-06-11 13:29:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 496553918d25d9593d4ff025dc2d5720 SHA-1: 41991dcc5345cee1d31119fe6efacc25366e605f SHA-256: 056285a8b2c6bdbcc7ef212572ed6bec87c61e2206c5565afb69a61ed4aa253c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically mentioning Roblox. The document body, though partially corrupted, contains references to 'Gift Roblox Com Free' and a URL that aligns with this lure. The presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent to direct users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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/gift-roblox-com-free-game-hack PDF link annotation
    • http://aviaprofsoyuz.info/images/roblox-troll-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-codes-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/robux-hack-tool-download-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/is-roblox-hacked_GM431946152.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
font_00_sfnt_off00005529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5529 28120 bytes
SHA-256: 535bd6d1425fa8793517ce20e561bcedb62a19ddda87db02089ad08f216f4c39
font_01_sfnt_off000094c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C8 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_02_sfnt_off0000a505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA505 18432 bytes
SHA-256: 57f01cd6af575f81111b0ea02a2f294eb673924b45c4096f13cbbc81397876fb