Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf0f125dc435433…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 19:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9074c20b3151800e55796fa07eafde0b SHA-1: fd7e7a57a86e8758772cfee831a468cad8673471 SHA-256: 5bf0f125dc435433f637462e4c17620e01b35e04256a26f201081dea27fae8a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links, including one that redirects to malicious infrastructure, disguised as a game hack generator. This indicates a lure to trick users into visiting a potentially harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam attempt.

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/479516143/minecraft-hacks-18-9-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-admin-in-roblox-life-in-paradise_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-do-you-code-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-do-you-get-free-robux-google_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/fly-hack-roblox-weight-sim_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-how-to-hack-any-account_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-roblox-account-passwords-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-how-to-hack-with-cookies_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-bc-roblox-code_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-hack-coin-master-using-es-filer_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22636 bytes
SHA-256: 0d7989cc1b1f9c5e02fe1d4597d2b889e49002710d27f063c11a22928009a7ba
font_01_sfnt_off000061e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 18508 bytes
SHA-256: cd9237b9687b7c478886c0b60ca23dbd49803dce24975db22de6864494fbbe68

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