Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a759fc0f6401f4…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 08:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8ef876c789b89b1594874383b0d8d60c SHA-1: 5207c754175e5a7f333397e9f13e096597cdec69 SHA-256: 75a759fc0f6401f4a2e59be80bdc086100a17e4bba52c2f7deb9b48c6db7a907
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free Robux and game hacks, directing users to a known malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/431946152/microsoft-bing-robux-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robux-hack-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-sound-effects_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-printable-roblox-birthday-invitations_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/admin-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-admin-roblox-nantes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-no-joke_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-facile-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-on-pc-2021-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/good-hacks-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robux-generator-unlimited-hacks_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-roblox-dragon-ball-rage-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-2021-december_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-sin-vertificacion_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-food-on-coin-master_GM406889139.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/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-roblox-gta-5_GM431946152.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
font_00_sfnt_off00002c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8B 22092 bytes
SHA-256: 30b0551ef164da682817d45d7adb2200be3a05dbec9b38cf6def3040aaa9b346
font_01_sfnt_off00005d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3D 18972 bytes
SHA-256: e4b126ffd0caac4577e908450ef3c2d736597e05b1f592c38ab5e91dff8442af

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