Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c7e4a06efba782…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 08:53:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efabc98cd52d4ac49e958ce2d09aa6ca SHA-1: 439f5f0a7e8b8f440980b624940784aedbbb33ee SHA-256: c7c7e4a06efba782f790e6c0cdf89315213a655500a63945511e7cd059b378a0
200 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks or generators for popular games like Roblox and Minecraft. The document body and embedded URLs indicate a lure for credential phishing or potentially malware distribution. No scripts were extracted, but the presence of malicious redirectors and brand impersonation strongly suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/roblox-free-roblox-toy-codes-game-hack.
  • 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 http://netcdn.co/app/431946152/roblox-free-roblox-toy-codes-game-hack In PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-free-robux-in-roblox-youtube_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-minecraft-texture-packs_GM479516143.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_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 22620 bytes
SHA-256: 83021d81e023e5b43e62672f382de27c39b550cfeb44deb1472352feb3e0ff90
font_01_sfnt_off000063e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E7 18816 bytes
SHA-256: 6eafba3bb212d4f6f2b1e5581f00fe8d74df7a68b3e5dc200d38b20e2fd9e016

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