Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f06b9fd24fbb28b…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 17:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 60aed1fa9cd037d02266d48727f6bdd8 SHA-1: 4ec6573b9d426958b91e48786cfe6be4400b3c0c SHA-256: 5f06b9fd24fbb28b9834f7066d712c48763b749835a8e60780ab599a26c5e2a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one pointing to a known malicious redirector. The document body and heuristics indicate a lure for 'free generator / game hack' content, aiming to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's part of a phishing or scam campaign.

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/get-free-robux-now-game-hack In PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification-2021-no-download_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-get-a-shoulder-pet-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/robux-free-roblox-update_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/good-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/working-free-robux-site_GM431946152.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
font_00_sfnt_off00003084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3084 22688 bytes
SHA-256: 45f33836cd950f0e91d04f0b670aeef96ce534a29bb54e806882b2bee423b8c1
font_01_sfnt_off00006357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 18984 bytes
SHA-256: 0a65e5c108e82a1a0ff4b87c53a9dfb9bb47271213ba12426b6d61436a1aec71

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