Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4d0d8626cd2165…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 10:53:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 72f193331fba24482beb58de9db14081 SHA-1: 68db7d3a422f9f9a38a621be3e0877e54d8bd8c0 SHA-256: be4d0d8626cd216563106a13475009f4e5457db7fad8eeaedadc2cc0b2d8ade2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this 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/roblox-hackprogamers-com-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-headset-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/citizen-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-bf-cheating_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-clothes-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-pokemon-go-accounts_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/dantdm-com-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-accounts-rich-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-math-games-online-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-robux-and-ticket-hackexe_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-btools-hack-script-2021_GM431946152.pdfIn 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_off000030e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 22244 bytes
SHA-256: 07d938a98d3fb66b92e1e97d2412dd845dce67f71f4fcc798b5322b08cee567a
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 19092 bytes
SHA-256: d26117ac9301c6aa9374fcae7e0fccda191402db8399675fac54987eaaf59708

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