Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7301fbad7b7f34…

MALICIOUS

PDF

48.7 KB Created: 2021-05-13 16:41:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8b688fa52150a41ca76efc4f1425b596 SHA-1: 04694f888c1d97310169bc631e14402c68d2e6ee SHA-256: 4d7301fbad7b7f34338b552dbdb9a6adcc8a2701acf0d5e167b7065c66ad7b1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-coin-master-hacks-no-verification-or-survey-game-hack. The document's content and embedded links strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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-hacks-no-verification-or-survey-game-hack In PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_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_off00004ec3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC3 25980 bytes
SHA-256: f07d14a7face5c7985daa9a4e94b34c821b8ccbda2b7e474c92eab1ccfbd4130
font_01_sfnt_off000089b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B5 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00009bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCD 18448 bytes
SHA-256: 6033c807022dc8f5e7c2550342d577dba769a4341b0264654ce29c91acd4bdf4

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