Malicious PDF — malware analysis report

Static analysis result for SHA-256 feecd8d12492ffcd…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 21:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a6f336e1c9d10c9888a06e40cd37f2d9 SHA-1: 0e99fc52606602943709900e2465a4881d38ab02 SHA-256: feecd8d12492ffcd700e651bb719e196a4586a942500f22a6be7d188d781cf54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body text and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

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-get-free-robux-on-android-tablet-game-hack In PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-shavaka-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-hacking-software-free-download_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-javascript-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-bighead-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-get-free-unlimited-robux-indigojoe_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-online-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/i-am-hacking-roblox-jump_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/noclip-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-cheat-in-fame-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robuxs-no-offer_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_off00002f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F41 22080 bytes
SHA-256: 747682c1dc87f003980ac59b40b688c6bb52c6c86dae48afc7c96b0f53798334
font_01_sfnt_off0000605c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605C 19352 bytes
SHA-256: 56983d6ed283086eb0dd33c8a0f7fb06cc2de19d372c619ebf05cbf5f2aa5cac

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