Malicious PDF — malware analysis report

Static analysis result for SHA-256 083485daffeb662c…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 11:53:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cfeac84e6e3e6d794b04b955b659d9e1 SHA-1: e89d9c4ea5d355b5794c2fbb2365845cc7b11a99 SHA-256: 083485daffeb662cb7f9a96313a5eb75db48ea54a85433251a4d752f6ce27e2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a lure for 'free Robux' and 'game hacks'. The ML classifier also flagged this PDF as malicious. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful websites.

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/free-robux-youtube-channel-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-download-free-windows_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/youtube-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-giveaway-2021-live_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-in-roblox-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/easy-free-robux-website_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/beyond-hack-script-roblox_GM431946152.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_off0000322b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 22516 bytes
SHA-256: 1f89c4a9e7837ea37ce357705fa52d5cdc40c9a9ca370db5b6bdeba8c88dc70a
font_01_sfnt_off000064ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BA 19224 bytes
SHA-256: c131ac438cc4f0c9f39d2efaacd6b19e89869f9505c9d89c130bb2dbeeddde87

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