Malicious PDF — malware analysis report

Static analysis result for SHA-256 147e6296d6226e14…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 07:11:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f589bcf2deb074654e112092eb8ff59d SHA-1: 84db07004c5d6fb88a143bbd481c4fd67ab676a2 SHA-256: 147e6296d6226e145ffcda13e6adecaaf84168483d91c13b4d3b23da16568445
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'free generator' or 'game hack' lure, specifically mentioning 'Free Robux Discord'. This heuristic, combined with the ML classifier's high confidence, indicates a phishing or scam attempt. The document body and extracted URLs reinforce this, pointing to sites offering game-related cheats or generators, likely to trick users into downloading malware or visiting malicious sites.

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/431946152/free-robux-discord-game-hack PDF link annotation
    • http://mittlenberg.ch/images/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-hack-https-coinms-net_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_off000046de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46DE 24792 bytes
SHA-256: bcc44839440b9216b6d697018d5926cfef9c5d5e20693b5730e5b5bb245972d1
font_01_sfnt_off00008036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 18476 bytes
SHA-256: bd0365f7f2eefd731cbfcd90ede0e91cb43578b4b980f4195e4871e1034addc2

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