Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0848b40d5ff66f6…

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 01:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2a9e263935fa71a7ce034f33afe85e81 SHA-1: 3519226ca98c7492359533a96f228a3af204145f SHA-256: e0848b40d5ff66f604bdf08adb79b9b151a59a1abcaff341f91854ea18e1ee70
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are presented as 'free generators' or 'game hacks' for popular games like Roblox and Minecraft. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the ML classifier strongly indicate malicious intent. The document body and extracted URLs suggest a phishing or scam campaign aiming to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/xray-mod-minecraft-114-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacking-curleyhairs-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-super-power-training-cheat_GM431946152.pdfIn macro / runtime command snippet
    • http://digilib.iailm.ac.id/repository/roblox-speed-hack-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/play-store-games-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-a-lot-of-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-robux-t-shirt_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-games-free-online-play_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-accounts-login-and-password_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.aIn macro / runtime command snippet
    • 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_off00003378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3378 22724 bytes
SHA-256: 5110d757c34675535b1235ccd6790044a7fb63f7213dc14d2d92aae41f2c0bae
font_01_sfnt_off00006611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 18748 bytes
SHA-256: 5b442dcc3f3349fc6fd674a71fa96c6a55f9280713babfbda9777be484e1b5e5

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