Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb15a281c514612e…

MALICIOUS

PDF

45.2 KB Created: 2021-05-10 22:36:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ba7f59e1048a2c7e7512c59cac694bbc SHA-1: cbde3b66cb881e24c566558e8186d4cb762f24ff SHA-256: eb15a281c514612ea0e6d1245b8e7d698a527abacfc4756bd94800457c2fdf1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded URLs suggest a phishing attempt to trick users into visiting these malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/free-coin-master-spins-links-2021-game-hack In PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.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_off00004aba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABA 25184 bytes
SHA-256: 338091370a4d5432c78525f92545b0408c8e4d1fa44d2d33519a80dd09aa507f
font_01_sfnt_off000083c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C5 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D68 18456 bytes
SHA-256: 1df78224994ee43a22d89536079f46dbccffe913f4ec8075feb5eac5cb57a7db

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