Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e5034e4df525c3…

MALICIOUS

PDF

44.6 KB Created: 2021-06-14 01:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0a7e7a08bf2d1442770aee41dd8e803a SHA-1: aa9015ec166626ae0199634573cf6cfd143f857e SHA-256: a3e5034e4df525c3be39f3ce88aef420d1db5b29928b86ec055a0a359ef2a3d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free game hacks and currency. The primary lure URL is http://netcdn.co/app/431946152/pagina-free-robux-game-hack, which is designed to trick users into clicking through to potentially malicious content. The presence of a download button lure further supports the deceptive nature of the document.

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/pagina-free-robux-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pokemon-go-free-nickname_GM1094591345.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/tiktok-free-hearts-2021_GM835599320.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-website-not-a-scam-or-fake_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-rblx-gg_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-legends-of-speed_GM431946152.pdfIn PDF document text
    • https://www.roblox.comIn PDF document text
    • 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_off00004dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAB 26696 bytes
SHA-256: 516dbbdece214a4c35a83ff5e4545345806d11205ec3a6208ce5b42e744640e2
font_01_sfnt_off00008a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A00 18992 bytes
SHA-256: 6c871727d9577d47e6a89988b54ec166a9fc4f250e5a6465173487ff884f42d9