Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba80244c39f96b9…

MALICIOUS

PDF

41.1 KB Created: 2021-05-14 16:08:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: abdecc911c2d4dcd09cab7b0592c419f SHA-1: 182762ddeb021c9b69c02ece8508f23a9966a162 SHA-256: 3ba80244c39f96b95a8e5dc9944f811363b51773d3c7c633b32075bc8e036663
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-coins-link-game-hack PDF link annotation
    • http://apkmaykop.ru/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-hack-roblox-to-get-free-robux_GM431946152.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_off00004654.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4654 24764 bytes
SHA-256: 36b579265c304cef9e88dbfeb6969afdde13c1b2641f78edff079c43438c1041
font_01_sfnt_off00007f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F68 17880 bytes
SHA-256: 5ce88b684446e36e89a0643934549b22fce1d776877bbe9d9a558feafde7429d