Malicious PDF — malware analysis report

Static analysis result for SHA-256 77694186ea77f431…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 19:43:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fd4b1d9fb4a4142539d072b491a2fe37 SHA-1: f37d50e405553a2b19615bf9f4d90e32fbd0a45a SHA-256: 77694186ea77f4319885fdcc10ad59dd57b212a1a62814264c021c1b17b5a661
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The primary lure is the URL http://netcdn.tw/app/431946152/roblox-re-game-hack, which is associated with a 'free generator / game hack'. The document body and embedded URLs indicate a social engineering attempt to trick users into visiting these malicious sites, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

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.tw/app/431946152/roblox-re-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-playset-for-free-shirts_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/app-hack-roblox-pc_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/lyce-de-roblox-2-hack-director_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/tiktok-for-free-movies_GM835599320.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/link-hacks-madpaintball-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-java-free_GM479516143.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_off00002f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F83 22836 bytes
SHA-256: 2a5ca072a2a01e7ce42c0c6038e603755845d25b6d01a6205883632fec398564
font_01_sfnt_off00006299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6299 18484 bytes
SHA-256: 9f3d5f952a5a8565a36a95a9616e220af72e779ac4925ec2f8c0411011cafdf3

Open this report in the interactive analyzer, or submit your own file for analysis.