Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e4f1cd775f4994…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 07:05:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f9882f8fd3b38786e5de2fa3fece419a SHA-1: fd89379e4718c7789e0985395d8a6e780a0fc1f2 SHA-256: 78e4f1cd775f49943ea983be953420748eb855f922442440a46416d585645752
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to a lure related to 'free generators' and 'game hacks'. The document body and embedded URLs reinforce this theme, directing users towards potentially harmful content. The ML classifier also strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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/easy-games-to-hack-on-roblox-game-hack In PDF document text
    • https://lib.btkljogja.or.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/cheat-extension-google-pour-cheay-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-hack-no-survey-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-robux-giftcards_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hacker-web-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/who-to-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/best-working-level-7-exploits-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-on-ipad_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_off000030eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EB 22480 bytes
SHA-256: f82bf98bf6ebead259cd2a665102a6e0db1629b13558bd55c8decd62db15cba4
font_01_sfnt_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 19096 bytes
SHA-256: 6fdb4a454729c0e322737b4e9d049e11b53aeae3aec0aa1196775a0b824bedb7

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