Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdb385b01b715cb…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 09:18:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: eb3dde84d20361f0be950a8169b6fbb4 SHA-1: f29d9b744f38505b08a1b70773823df42a20e9a0 SHA-256: 8fdb385b01b715cb56795e73818d8d17c4685666fa454ffe1654cecb1414c2df
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure appears to be related to Roblox and Coin Master, aiming to trick users into visiting compromised sites. The ML classifier strongly indicated maliciousness, supporting the heuristic findings of malicious redirector links.

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/new-hack-jailbreak-roblox-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-youtube-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-be-sponge-bob-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-phantom-forces-aimbot-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-gratuit-hack-facile-sans-attente_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-no-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-get-any-gamepass-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-scp-foundation-model-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-without-human-verification-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/vouchers-to-get-free-robux-2021_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_off00003007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3007 22648 bytes
SHA-256: f8a74a70394246bc4bbf4688f754069bf6e06b8e5a39a7f1f88b3a899b9d9f69
font_01_sfnt_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 19104 bytes
SHA-256: 4bc14260bf2749bbf04986fd025be709ac4f464f3de491901173cfbe6f4204f0

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