Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0de351147e3506d…

MALICIOUS

PDF

47.6 KB Created: 2021-05-16 14:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 816a84ebb7cf968f0e44b4f84096eab4 SHA-1: 538b03f6682df577d8fc88c4fadfb36939467b9c SHA-256: f0de351147e3506d6c1efb30fdc6d3c7b92bd51b565d0530ac04dbdefa69af45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, disguised as offers for free in-game currency or hacks. The primary lure is 'how-to-get-free-robux-hack-game-hack', directing users to the netcdn.xyz domain. This pattern suggests a phishing or scam campaign designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-robux-hack-game-hack In PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/robux-hack-generator_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_off00004b2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2D 32580 bytes
SHA-256: e0a2a3c985ca11b31068167ef44669e75c86c7f28f1202f6be3e8f9be1c74e0f
font_01_sfnt_off000096c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C4 18680 bytes
SHA-256: 94830d128a2a842b7d907871b5b30233810e9b8beb569ce3f786f2ddb63eaed4

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