Malicious PDF — malware analysis report

Static analysis result for SHA-256 37697b556cce0aaa…

MALICIOUS

PDF

46.3 KB Created: 2021-05-11 03:38:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7f8789773de21bc915d56da96a58ac18 SHA-1: 5e0d6bb04e908e5334c7ad18895a359f624a036f SHA-256: 37697b556cce0aaade1e9cfc057d1024d20ab02114b2d16c6e3d30da7f44f70e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free Robux' or game hacks. The document body and embedded links strongly suggest a phishing or scam attempt, aiming to lure users to malicious websites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/431946152/but-link-says-free-robux-game-hack In PDF document text
    • http://lib.stiesultanagung.ac.id/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/coin-master-hack-2021-ios_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F1 27032 bytes
SHA-256: 869dde334ef06a72469f106d1b3d787136c2858533b5b145e1e4664a55bb1ce7
font_01_sfnt_off0000860b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860B 3084 bytes
SHA-256: 4889dc98a6bfd3c9244583f92387be58625a91e7a969778ad35ada89b27ed636
font_02_sfnt_off000090b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B1 18816 bytes
SHA-256: 8fbe90bccae9ee3155d3d967e7829d2e05c9e53767c9dd01fe36dc6e4248615b

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