Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d9c90639f678676…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 18:55:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 05e23a8342dff8d7b3a6b70e7b466707 SHA-1: 8fe7c031c43a5551e8a616f29b1463f3010d766c SHA-256: 8d9c90639f67867688d5f657948172cf81c235671569f658ed70cd6a445bc493
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is http://netcdn.tw/app/431946152/aves-magic-academy-hack-roblox-game-hack, which is flagged as a known malicious redirector. The document's content and embedded URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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.tw/app/431946152/aves-magic-academy-hack-roblox-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-script-executor-free-download-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-fly-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/nathorix-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/good-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-hacks-and-cheats_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_off00002fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE7 22112 bytes
SHA-256: a182ee5a3b2487a59ca740ab8f0f6ae3d98ee0086baee2efeb299281f1a2b782
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 19512 bytes
SHA-256: 28defe6af997172d3537e2c24d438ecfac549933fda829504db391a969335c70

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