Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab402a3224b7631…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 06:05:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 92b5732a9c46f46c312518a00988578a SHA-1: 8d6c13a7522f2bb92255434394f9f52324d93d57 SHA-256: eab402a3224b76314514a0e0d5b8dbc6e355ef1b6ac644d53abb79a783fab407
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/give-me-free-robux-game-hack. The document body and heuristics suggest a lure for free game currency or hacks, likely leading to a phishing or malware download site. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

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/give-me-free-robux-game-hack In PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/roblox-girl_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/rbx-claim_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/robux-money_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/rbxdemon_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/executer-command-roblox-free_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_off00002ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF2 22304 bytes
SHA-256: 9034171800942473b1c509f0a926ff57fff5400bc623e6ba57e7e7d114037ad2
font_01_sfnt_off000061aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AA 19144 bytes
SHA-256: 49caa2a42633a23caf301bb0fa3c0edf25e4e3c2cd040ebd05f96fd152ca8770