Malicious PDF — malware analysis report

Static analysis result for SHA-256 6661c4ffdbf1d46d…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 14:57:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 738b785ab503614b9b2132a8481f3e1f SHA-1: 9e84a5d134bd7567446616228320f4a57ae49308 SHA-256: 6661c4ffdbf1d46d496819bab74355fdc4bb96d7aff8d80667ae1d20e902b5c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary link, http://netcdn.co/app/431946152/roblox-crc7-hack-admin-code-game-hack, is presented as a 'game hack' generator. The document body and heuristics suggest the intent is to trick users into downloading a malicious payload by clicking these links. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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-crc7-hack-admin-code-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-just-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-para-strucid-roblox-2021-octubre-monedas-ilimitadas_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/mask-free-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-change-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/harked-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/i-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-servers-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/btools-hack-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 22412 bytes
SHA-256: 34b6a6320bfdc7adbab89bbb26c1bb28811280f0cd4c7c709a904ed26feff89c
font_01_sfnt_off0000613c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 19268 bytes
SHA-256: b571564c32b1c9691ee0f7c76f9cb1db7bee81910818a1047b8c4020bde265ff

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