Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33505124a5edd92…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 15:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a5643522a710ea921e31faa96b0854eb SHA-1: cdfdaca736fdcee6e93516ac971702846b9bd54a SHA-256: d33505124a5edd92b94614b70eab036d5ea9cf3dc47fb74c1aa18b6e0fcc37dd
160 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body, though partially obfuscated, contains similar URLs and references to game-related content, reinforcing the phishing pretext. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/479516143/free-minecraft-worlds-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-executor-free-download_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/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-500-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://code.giftcards.comIn 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_off000053f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F8 29432 bytes
SHA-256: c9e80961e4fbfd9d5d34ac58a4bb320e1ca4ba73cb959a4e6620e64de6a4c35e
font_01_sfnt_off0000919f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x919F 18156 bytes
SHA-256: 664c7195a075aff6dcec565529a8f8eee0b73719923e2c76767f815b88d63ca4

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