Malicious PDF — malware analysis report

Static analysis result for SHA-256 39099c8daeb54eda…

MALICIOUS

PDF

34.0 KB Created: 2021-07-01 22:16:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 23e0d047ec73d4b25017b0575050273e SHA-1: b0edd72847560f23125f7d6c6b1c342602d4e969 SHA-256: 39099c8daeb54eda956f28e2dd14c8e11a28f8b0bea848aefdd5a770cc02d2e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are designed as lures to trick users into visiting potentially harmful sites. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/cheat-apocalypse-rising-roblox-game-hack In PDF document text
    • https://planetzoe.hr/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-hack-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/jailbreak-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-do-you-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-easily-get-free-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-free-robux-without-downloading-apps_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
font_00_sfnt_off00002d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D17 22496 bytes
SHA-256: 90e32e442454c278c202ddd1cab4a88ab9f8f1ea1265664d45894e2af3f31e70
font_01_sfnt_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 19232 bytes
SHA-256: dd9a1235f30ee0f623f0e8eeec08f86eeadf6ee844bd273d6d203f91393432ac