Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da09546014b2f53…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 03:16:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2b477f7b0687981273a5285664681c47 SHA-1: cb934c427290c01cc0a3d7593b41c88cfd5c7712 SHA-256: 5da09546014b2f533bf512c89311a63713d09023f54f92dc6c4efe37efcac243
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier and specific heuristics strongly indicate malicious intent, likely to trick users into downloading malware or visiting malicious sites. Although no scripts were extracted, the embedded URLs and the nature of the lures suggest a phishing or social engineering attack.

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/cheat-roblox-menu-download-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/how-do-i-hack-a-roblox-user_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/cheat-engine-cheat-table-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-v3rmillion_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-bandit-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/corn-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-vip-server-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-survive-the-diasters-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/fbchampion_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hpw-to-hack-roblox-android-step-by-step_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-ways-to-get-robux_GM431946152.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_off00002e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2A 22240 bytes
SHA-256: 52c1d4b5982129faca5872355afaa7801ea4e2cf1926af143c4601476d6e05a8
font_01_sfnt_off00005f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F38 19600 bytes
SHA-256: 6ab6a43c9fa6468b571dfe5a43f92535dfddc8ccf13299bfe2fb23d5d989c6a2

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