Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bc4688dc159609…

MALICIOUS

PDF

34.2 KB Created: 2021-06-23 12:15:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 64aa2e5c2b09ad40e86a8986e9dd5583 SHA-1: daaf24cdefd1c8c9949b0c619fbf00d6e5db8221 SHA-256: 47bc4688dc159609980f1b85e88088ff467270c73cf840f8da832ea3d4a7b191
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 'free generator / game hack' redirector lure. The document body explicitly mentions 'Claim Free Robux No Human Verification' and links to suspicious domains. This indicates a social engineering attempt to trick users into visiting malicious sites, likely for phishing or malware distribution.

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/claim-free-robux-no-human-verification-game-hack PDF link annotation
    • http://ipdrs.org/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-complete-surveys_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/fev-10-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-robux-hack-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/free-tiktok-followers_GM835599320.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
font_00_sfnt_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 22124 bytes
SHA-256: 44c5ca70ee54bc7ad407321ffb8b167568066d48f253a3c902f4d9a9587470a0
font_01_sfnt_off00005fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 19408 bytes
SHA-256: 76754ceefb7900bcd17a10ad53f94e22aa521e731e1dc0452d8e94965ac81fce

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