Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0e668390c780c4…

MALICIOUS

PDF

35.6 KB Created: 2021-06-30 17:06:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 597a390a6247a28e72f35f4d31335b9e SHA-1: ace8bfbc9926e47ef5d7483417b55eabbee701f7 SHA-256: 2a0e668390c780c48dd017a5003af5bbf0e6e6fb3f64ca5b6ca57f001e14ae65
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and free generators. The document body and embedded URLs point to deceptive content designed to trick users into clicking through to potentially harmful websites. The primary lure directs users to 'netcdn.co', which is flagged as malicious infrastructure.

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/how-how-to-cheat-on-roblox-pc-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-keyloggers_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-something-into-your-roblox-inventory_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-codes-october-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/difference-between-hacking-and-exploiting-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/app-store-games-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-android-apk_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-and-bc-from-website-clone_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-4-mobile-24com-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/good-roblox-hack-reddit_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-knife-capsules-check-cashed-v3-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-win-attack-madness-in-coin-master-hack_GM406889139.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_off000031a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 23288 bytes
SHA-256: eb10bea4bf63eca494a9c8f3d305b1677a560f4c40a5093c9b4dee2e3a4a123e
font_01_sfnt_off000065e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E4 19072 bytes
SHA-256: d60961c473dd06636640ebdbb1a183996e6db9d178fbda7a6b7390ed5929a7ce