Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec52a629d3b17799…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 18:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 985b2a2e9df1e72a39c68a0fc9df54cc SHA-1: abebc83c0ca95790c2a31b980dad8fcf6bc66966 SHA-256: ec52a629d3b177996fa05672437f1d9cecfbd6a77f9b4168f08d3208c1b450fe
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple lures, including a 'free generator / game hack' and a remote-support tool pretext, directing users to malicious URLs. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a phishing or malware distribution attempt. No scripts were extracted, but the document structure and heuristics point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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 https://netcdn.online/app/479516143/minecraft-games-to-play-for-free-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-pokeballs-in-pokemon-go-2021_GM1094591345.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.youtIn 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
stream_004_off00005217.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5217 25184 bytes
SHA-256: b47cd7fbca291c04838297471d789036b29dfa752a459ef9ab0c41556e35cbba
font_01_sfnt_off00008c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C07 18380 bytes
SHA-256: e4e6021f190597b5ba2cc648d82e873dd3d7a425745f666e69b81b8efe23a832

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