Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f67b989519d34b…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 09:48:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 625f4fca8acf4e0c091a1cbbc9f4a14a SHA-1: c8fb4f9ba5071e53adf037187558fc17df51324b SHA-256: e3f67b989519d34bbc60ba3bd221e99dee767abd59ba8fdba6ad5f9ff8773bad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that redirect to malicious infrastructure, specifically promoting a 'game hack' lure. The embedded URLs suggest a phishing or scam attempt, likely to trick users into visiting potentially harmful sites or downloading further malware. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood 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/406889139/coin-master-daily-free-spin-app-game-hack In PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/robux-get-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-cheats-for-scp-site19_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/inf-health-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-money-on-adopt-me-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/learn-roblox-lua-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-roblox-script-injector-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-make-a-free-robux-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-robloxian-high-school-free-coins_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/comment-avoir-un-dominus-aureus-free-ssur-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003439.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3439 23072 bytes
SHA-256: 520fb63ee00a7f661fdde4364eccf203756d4213117b8019df80fd44f81c9f54
font_01_sfnt_off000067ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 18596 bytes
SHA-256: c60f148968409d87350eea64826c1d5db15a758400e2fd6cc53d8dcea5acf3a2

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