Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbf62724c396eac…

MALICIOUS

PDF

33.1 KB Created: 2021-07-01 08:26:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 20e1f74071d5cfafecdaa2644b1863fd SHA-1: cb0c6bb3f1e29e02dd954868a734f012bac1f6db SHA-256: 5bbf62724c396eacfc40fa94fe079b94e59d3a6e201e2908a790b1d6cc275e75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising game hacks and generators for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a social engineering lure designed to drive traffic to potentially malicious sites. No scripts were extracted from this sample, but the primary attack vector appears to be the embedded malicious links.

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/roblox-xbox-one-hack-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/software-for-cheat-engine-66-to-not-make-roblox-crash_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-get-free-unlimited-robux-by-hacking_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/pokemon-go-free-download-apk_GM1094591345.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-code-for-roblox-unicorn-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-we-are-devs-hacked_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-speed-and-jump-hack_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-hack-generator-secret-hack-revealedfree-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-download-free-chrome_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_off00002daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAA 21688 bytes
SHA-256: 91dac96da41518bbeb7a6f86ffeceaed6a561b20b1d0aeb5a73d6025412b531d
font_01_sfnt_off00005d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 18656 bytes
SHA-256: 809971bb1b8c1e81ff711f2386f98c46a77da0140ae4f33c32348f3ceb6d9eb1

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