Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6b871ac14a5a9d…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 00:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 072d73deb2d8ded45444ad18b0da271a SHA-1: 5354c0aff4340b48f9a7401fd881462049a5bf3f SHA-256: ec6b871ac14a5a9dbc85dc2bfa556fd46ef97d7fa5aa57c98a258c0a8b90b543
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising game hacks and generators. The primary lure URL is https://netcdn.xyz/app/1330123889/what-is-pubg-uc-carding-game-hack, which is associated with a game hack lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/1330123889/what-is-pubg-uc-carding-game-hack In PDF document text
    • http://perpus.masda.ac.id//repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-bonus_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
stream_003_off0000464b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x464B 24880 bytes
SHA-256: ed8a50c7b8e7341090dfb165569b24965a66ada5ce1080a1464eaa634744dc13
font_01_sfnt_off00007eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB0 18888 bytes
SHA-256: 0422c6ada3ed731a07a4352846b00804401e9c627c652135588066eea4deb99d

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