Malicious PDF — malware analysis report

Static analysis result for SHA-256 364f8796c70f8a81…

MALICIOUS

PDF

43.6 KB Created: 2021-06-07 19:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c859020548ddcde2fe134a9cb999f558 SHA-1: aa92b91e18c0719c7d050adf41fc74a74a9f565f SHA-256: 364f8796c70f8a81a0bd5f2a29f2fa85f0e17f6d0f77346b3ff98ebcabcd3da3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free generators and game hacks. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary attack pattern involves tricking the user into clicking these links, likely leading to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/sword-hack-script-roblox-game-hack In PDF document text
    • https://elite-house.su/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://elite-house.su/images/robux-survey_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elite-house.su/images/10-robux_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/roblox-free-the-feliciti-como-se-agacha_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/roblox-verification_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elite-house.su/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/how-to-get-free-cute-clothes-on-roblox_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
stream_004_off00004ec2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC2 23980 bytes
SHA-256: 4fabda5381c6382ecbb0fb2d26b3101830d216033335fe1d6053e71a81596b8c
font_01_sfnt_off0000857e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 18920 bytes
SHA-256: 8fa796396d2550bcaa991e4bf05cad7e5b400dcf460929a7f72c6c47db57cd20

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