Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3cf8da7eaf891b…

MALICIOUS

PDF

33.8 KB Created: 2021-06-29 03:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6bb35e4843a2f173c2a9678f39c190bd SHA-1: d6de64838753d507b8cf25db3914868217688677 SHA-256: 5f3cf8da7eaf891bd6263faedbd5157f50675a9efb8a77e0eec437fefe0b6a16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-create-a-roblox-hack-in-2021-game-hack, which is likely used to distribute further malicious content or phishing pages. No scripts were extracted from this sample, but the embedded URLs and heuristic firings strongly indicate a social engineering attack.

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/how-to-create-a-roblox-hack-in-2021-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-jailbreak-hack-client-we-are-devs_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-tp-hack-ccv7_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-case-code-for-arsenal-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-roblox-shirts-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/doj-paleto-bay-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-vheicle-simulator-hacks_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-mobile-hack-apk_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-buy-obby-link-in-description_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-obc-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-cheat-tables_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-method_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-work-get-a-roblox-hack-gui-to-work_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/cheat-fr-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-how-to-get-free-accses-to-welcome-to-bloxburg_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-daily-spin-free_GM406889139.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_off00002eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EED 21464 bytes
SHA-256: 1924baaa4300caeb5be65ea8fbf306c7119a08f4a278eb7d6adf3ae99db45713
font_01_sfnt_off00005df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF6 19324 bytes
SHA-256: 5ca25fd5c6332a34e8d5acb1619c98392bfe96485a29fa849da5d8dde81511c3

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