Malicious PDF — malware analysis report

Static analysis result for SHA-256 286964d2654670ab…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 12:38:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9037391707d11972e8f711258baee831 SHA-1: be1f0f3b502e3e8f4aea6e40cfc6a386a30a0891 SHA-256: 286964d2654670abc8880f623d81b7e7c556d7ee4bce35cb6d8af8fb16f2fdc2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links designed to lure users into clicking on what appears to be game-related hacks or free currency generators. One primary link redirects to known malicious infrastructure, suggesting a phishing or scam attempt. The document body and extracted URLs reinforce this lure, aiming to drive traffic to potentially harmful sites.

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/406889139/coin-master-card-collection-hack-game-hack In PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/hack-para-canbiare-el-nombre-en-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-bloxbux-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-tix-factory-for-free_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-v-bucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/http-proxy-site-free-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-robux-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/hack-de-juegos-apk-robux-gratis_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/real-roblox-lumber-tycoon-2-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/robux-codes-2021-free_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.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_off000031d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D5 23048 bytes
SHA-256: 174087f2cd5c830c2b006481e713243ca773bf97b52db5e7b72d6965b4be6d59
font_01_sfnt_off000065b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B2 18252 bytes
SHA-256: 03293f303705959211c08c462d715416b5c7a80614225a4e7f4815b6b6a1d272

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