Malicious PDF — malware analysis report

Static analysis result for SHA-256 150bf3257f0a3e4e…

MALICIOUS

PDF

33.9 KB Created: 2021-06-25 00:20:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 18b523948d95239e66129898d49daeab SHA-1: 65112baa8fe628eab898e4737e24001972afa656 SHA-256: 150bf3257f0a3e4e5502ac45ba811cf02b6f50b5ac2aa209bc480d1e6a1da388
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a prominent link disguised as a 'Roblox Free Download' and 'game hack' lure, which is identified as a malicious redirector. The embedded URL directs users to a site that likely hosts further malicious content or attempts to exploit the user. The ML classifier also strongly flagged this PDF as malicious.

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-free-downoad-game-hack In PDF document text
    • http://hondenspecialist-engelien.nl/images/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/free-santa-christmas-obby-roblox_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-hack-robux-with-cheat-engine-61_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/on-roblox-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-hack-roblox-hospital-roleplay_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/cool-avatars-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/claim-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/comment-hacker-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/roblox-high-school-how-to-get-free-gear_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-hack-mcpe-master-coins_GM406889139.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_off00002f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3B 21620 bytes
SHA-256: b0cfa9b3b678ff45905824ec4eaf15226171bc92f33bb7e4cf98943fb1a4eb37
font_01_sfnt_off00005ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC3 19156 bytes
SHA-256: 488cf91c5852f61976a75c157190bc68970b6643a3b61c25d9d957a5e6cf376e

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