Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a7db0d54394838…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 03:13:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5519c82299691ca1a9d06e742aa270e1 SHA-1: 59b24e2ae8f5cdbd4f2593d738196244d75cb675 SHA-256: 96a7db0d54394838e07667a300a47da3dbc5497ea643797eafcf085d7e401686
180 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free generators, directing users to a known malicious redirector. The embedded link, https://netcdn.xyz/app/431946152/roblox-skin-free-game-hack, is a primary indicator of malicious intent. The document's structure and heuristics suggest it is designed to exploit user interest in free in-game items to lead them to potentially harmful content or further stages of infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox-skin-free-game-hack In PDF document text
    • http://pielab.gr/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://pielab.gr/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://pielab.gr/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://pielab.gr/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pielab.gr/images/haktuts-coin-master-free-spins_GM406889139.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_off00004a91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A91 26312 bytes
SHA-256: 34b90d3ace70fcffbf61ac248f1e218b89df3aea874cc58f9c0aa7c60af45536
font_01_sfnt_off0000868e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868E 18236 bytes
SHA-256: 6f613c146b2caf8aa71dfdba399286dfcc190b8555f8633d10d72eb14be7938a

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