Malicious PDF — malware analysis report

Static analysis result for SHA-256 13504d26129705c8…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 22:26:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 69c4d86b465d000aacfae8ae028450b7 SHA-1: 50dea5d99ee707cc862788de1dccfa2842d6b1a0 SHA-256: 13504d26129705c8c0eb35683592073daab4671e17a4b53a3a7146bec28b536a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, masquerading as a game hack generator. The document body and heuristics indicate a lure for free game items or currency, a common tactic for phishing or malware distribution. No scripts were extracted, but the primary malicious action is the redirection to the identified URL.

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-digimon-aurity-hack-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/como-tener-robux-sin-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-account-roblox-2021-obc_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-cheat-generator-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-free-item_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-free-pc_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/earn-robux-online-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-paying-anything_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F55 21992 bytes
SHA-256: 9603f27fc636f3cf8ecb65ba23c36ec2bb8cbc7df9d381c721efce3d94338ca9
font_01_sfnt_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 19628 bytes
SHA-256: 710322f253b6b8db209d81abc297401729b281775859738251d64610b8c0c213

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