Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd33f6b1860e59ed…

MALICIOUS

PDF

46.6 KB Created: 2021-06-09 13:05:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b6e5f4933b7fe8df1191e414895dbb8e SHA-1: 00ef8cc687bf74e8886c7a3d853cd744c05fd8dd SHA-256: cd33f6b1860e59ed2c09f8cb4819b88fa6dcaf5516b0144089ff870d38103a57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically targeting users interested in game hacks. The primary lure appears to be a 'free generator / game hack' for Roblox. The document body, though heavily obfuscated, contains references to these lures and the malicious URL. The presence of embedded URLs and the redirection behavior strongly suggest an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/how-to-hack-roblox-with-edit-this-cookie-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cheat-code-roblox-pc_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-lumber-simulator-2-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-cod-style-games-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/www-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-links-twitter_GM406889139.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
stream_004_off00005415.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5415 27452 bytes
SHA-256: 99aca36aa5c70b2418b2cf08176da092be478ed5fdcfd0f3d04d0fcf869f8c1b
font_01_sfnt_off00009104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9104 19108 bytes
SHA-256: 3e05d14973491bc2354ad02eb9f1c254d150047ea3f6e2a2e568401af7618e9f

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