Malicious PDF — malware analysis report

Static analysis result for SHA-256 5398ac05c557aae5…

MALICIOUS

PDF

44.2 KB Created: 2021-06-09 04:45:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cda4d008dee9c879b9c9363bd26fd674 SHA-1: daa02ed2da20abbdf1577662dc457a04592cd566 SHA-256: 5398ac05c557aae54a0a50b65adadaff8e134291ded4f2f5754fc9b53d8c8cde
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which likely serves as a gateway to further malicious content or downloads. The document body and embedded URLs strongly suggest a phishing or malware distribution campaign.

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/roblox-restaurant-tycoon-hack-script-game-hack In PDF document text
    • https://www.sd-olimp.hr/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-pe_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off00005022.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5022 24296 bytes
SHA-256: 28b7339d96ed64c4ef90e2385c0eb7157948d3d975bdbcc81476d973a661c7c2
font_01_sfnt_off00008811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8811 18900 bytes
SHA-256: f24d9c99ccd226de2f0da08abc1ff13ef6a7f76a9451dfee8d0ac2d2c34bf8d7

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