Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d7224c17231044…

MALICIOUS

PDF

41.3 KB Created: 2021-05-11 19:05:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b19ac0877e9ae859ce40e91c7d10e50f SHA-1: 510bffbea0a0c6e1adfbd0b3fdac5319d4c13b86 SHA-256: f8d7224c1723104458e252989aa40940ba46f8719f64fa2d48ddbe1386b831fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, disguised as offers for game hacks and free currency. The document body and embedded links strongly suggest a phishing or scam attempt to lure users to malicious websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spins-coin-master-2021-game-hack In PDF document text
    • https://e-learningmin7jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • https://e-learningmin7jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://e-learningmin7jakarta.com/__statics/gudangsoal/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningmin7jakarta.com/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/get-robux-com_GM431946152.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://e-learningmin7jakarta.com/__statics/gudangsoal/files/hack-coin-master-free_GM406889139.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
stream_003_off0000494f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494F 23704 bytes
SHA-256: f1270f2072513baa0da86958a01c86fc81a533a40d77e74cb1d9047d40de7f3a
font_01_sfnt_off00007ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE3 18288 bytes
SHA-256: 9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad

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