Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9549145ed809ba…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 06:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 84acaffc30a41aa1dfa08fd2aa266432 SHA-1: 918efba91d17c24e94822fd287785e49ed340d75 SHA-256: 1a9549145ed809ba0219adb7b3b185dd5067362255b6badd30d2e58f5b0bae1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and Robux to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDFs. The document body and heuristics indicate a clear intent to deceive users into visiting potentially harmful sites, likely as part of a phishing or malware distribution chain.

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/play-roblox-theobbypros123-acount-for-free-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-in-60-seconds_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-robux-hack-com_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-cheats-for-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-console-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-free-buildings-in-roblox-studio_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-how-to-hack-in-your-game-hack-gui_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-download_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_off00002f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F58 21660 bytes
SHA-256: 2ee82c1de337f50cf8274640d9d4127904fa5a676793dd57f59e2dbc56c73091
font_01_sfnt_off00005f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1E 19972 bytes
SHA-256: 8ecf9f4c30da4edc966a81fb5e95154dcbbd68292f55b32fefa8e75af1c17de8

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