Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a907ed748ca607…

MALICIOUS

PDF

35.9 KB Created: 2021-06-21 09:59:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 643b81dfca309bfd0594b0541c233d73 SHA-1: c5ec698de9edc1cfeae3ce33ec7cc7cc2778d6eb SHA-256: e7a907ed748ca607116b3f2e67989150b5f31728f9ab53a57d782fb4ec044d55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a 'game hack' redirect lure, strongly suggesting a phishing or scam attempt. The document body explicitly mentions 'free Robux' and 'game hack', aiming to trick users into clicking the malicious links. While no scripts were extracted, the presence of numerous external URLs and the nature of the lure indicate a high likelihood of leading users to malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-no-clickbait-2021-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-gamepasses-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-gift-card-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D3 23580 bytes
SHA-256: cdfa1754db802a7733760da6fcf4704906903a8eacd230fb5be844ea5a86d968
font_01_sfnt_off0000651b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 19752 bytes
SHA-256: d74e5ebb4a9c2e05c30be0025741f6954b3c4122fe571f208d79d4742f833643

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