Malicious PDF — malware analysis report

Static analysis result for SHA-256 337afbcae4b32c80…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 10:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 63c344d148cb93e5a022f972fe751609 SHA-1: 19a529f253bc24c9b3b6f8d717ed1211123a8701 SHA-256: 337afbcae4b32c805646b7b3c42e071b983edff206707749c7e376563d163ce6
160 Risk Score

Malware Insights

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

The PDF contains multiple links to malicious redirectors, disguised as 'free generators' and 'game hacks' for popular games like Roblox. The primary URL http://netcdn.co/app/431946152/roblox-phantom-forces-hack-unlock-all-game-hack is identified as a malicious redirector. The document body and embedded URLs suggest a lure for users seeking cheats or in-game currency, which is a common tactic for distributing malware or leading to phishing sites. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful content.

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/roblox-phantom-forces-hack-unlock-all-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-ultimate-driving-v3rmillion-free-gamepass_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-open-cheat-engine-without-roblox-shutting-down_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/download-roblox-free-windows-xp_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/freerobuxexe_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/good-looking-free-avatars-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/instagram-coin-master-free-spins_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
font_00_sfnt_off000030c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C5 22416 bytes
SHA-256: c7fc1d178e86e3a875f1c7c0000448d12d6612786249cee2b55f6077d21d775b
font_01_sfnt_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 19504 bytes
SHA-256: 50774e052fd064c39cb0f52c6ae13a50216246fd6ae4280304ea28387c0337cc

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