Malicious PDF — malware analysis report

Static analysis result for SHA-256 4291357b3c864dd3…

MALICIOUS

PDF

50.6 KB Created: 2021-05-12 15:32:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 47103fd172f9fdc858515df1bdee34fb SHA-1: 3899d2f2b08c98baee5a2ea870e6b506c326d60a SHA-256: 4291357b3c864dd3e65a647ad5cc03c8204d96b3dd595a17b92e52643ef1501e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document's structure and embedded URLs suggest a phishing or scam attempt designed to exploit user interest in popular online games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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 https://netcdn.xyz/app/431946152/roblox-arsenal-hacks-download-game-hack In PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C06 34276 bytes
SHA-256: e3be43dbaaa800ed46af42a8c76ec418fb2cc8dd4281fb669622c60906724e61
font_01_sfnt_off00009842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9842 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off0000a252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA252 18688 bytes
SHA-256: 3194e743087210276cc8ef30afa20718d77c17967e4a232ddce90cfa751f40c3

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