Malicious PDF — malware analysis report

Static analysis result for SHA-256 40fdb59d4fb7d443…

MALICIOUS

PDF

33.1 KB Created: 2021-06-25 18:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e0bf27a7655669de65a1438c64720011 SHA-1: c987af3f1a1e6b80bcb0fced3230157f55fe2104 SHA-256: 40fdb59d4fb7d443809022dccd6f804d579c26bffa71119528192c8793ce4459
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or free currency generators. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially harmful sites.

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/hacked-t-shirt-roblox-game-hack In PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/robux-hack-for-free-easy-no-dowland_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn 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
font_00_sfnt_off00002d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D94 21312 bytes
SHA-256: f006b200588eb24d51a31398c32ed631965da01733375469fbab81a2c50b7d55
font_01_sfnt_off00005bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC8 19220 bytes
SHA-256: f9de4e8622f0b14d2570095299fe407609b6c06a4ca4bb30ba128b4bfe4611fb

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