Malicious PDF — malware analysis report

Static analysis result for SHA-256 393fa808edc33447…

MALICIOUS

PDF

32.6 KB Created: 2021-06-28 19:30:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: aacb38b96a037b7df5ee63e7dcb192a8 SHA-1: 4e2c4927033867b9b0eb6e24e01db868d033a7df SHA-256: 393fa808edc33447cbe7f47e5c863217447de84f6f68184fafacad216f0187b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, disguised as "game hacks" and "free generators." The heuristic firings confirm the presence of malicious redirector links and a lure for free game items. The document body text explicitly mentions "How To Hack Mocap Dancing In Roblox" and includes numerous URLs pointing to similar deceptive content, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-hack-mocap-dancing-in-roblox-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/hack-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/code-for-free-red-jacket-roblox_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/event-ykm-simlatr-roblox-hack_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-likes-and-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-2-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-jailbreak-hack-mac_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-hack-for-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-roblox-scratch_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
font_00_sfnt_off00002a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A50 21588 bytes
SHA-256: c139bc650709c0abc64f5ec762107944d2f478677b73d54aeaa1d2738644e2f7
font_01_sfnt_off0000597b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597B 19480 bytes
SHA-256: a32feca9de282d9118071de19a5056ce7178b90f3ddbb811828ab1f8b156af3f

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