Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8f57184342405c…

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 00:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 768460a2f7b0feea9187f79933d02615 SHA-1: 46aa515e3a95fef26c4db9ebc08cba92e473ab0a SHA-256: 9b8f57184342405c5a4fd50aa35cae6e1501808b113d44187c70716327574a1a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering game hacks and cheats, such as 'coin-master-free-pet-food-game-hack'. The document body and embedded links strongly suggest a social engineering lure to trick users into visiting these sites, likely for further malware delivery or credential harvesting. The presence of multiple PDF-specific heuristics related to malicious redirects and game hack lures reinforces this assessment.

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/406889139/coin-master-free-pet-food-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hacks-para-tener-aimbot-en-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-roblox-badge_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-other-pples-stuff-on-roblox-mm2_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-70-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hack-coin-master-android-2021_GM406889139.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_off00003541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3541 22200 bytes
SHA-256: e6e5f66f03d3ade3a83ac9281d5a9ab52ab21e398d0c3b8d69ebcc3e0af12d36
font_01_sfnt_off000066b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B5 18324 bytes
SHA-256: 10ce9c6a1e11ec0ca6b3660bcfd00cfe2a094fed43490c9d06fb1f9b5d2d4740

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