Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d8e1c493212f0f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-09 11:26:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bd0a89ad639b3bf33c6d71d3415d52f4 SHA-1: 1186035b36f87968d2aa203bcb2927e9cd5f461e SHA-256: a1d8e1c493212f0fc196c94206ae0d91ef2e976c275720b447ff60bc1ab8b58c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.tw/app/479516143/simplysarc-game-hack'. This suggests the document's primary purpose is to trick users into visiting this URL, which likely leads to further malicious content or exploits. The presence of numerous links related to game hacks and free items indicates a lure-based social engineering tactic.

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/479516143/simplysarc-game-hack In PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coolest-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/pastebin-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-jailbreak-noclip-hack-2021-unpatched-download-link_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-the-easy-way_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-free-robux-download-no-survey_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/cranberry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/como-tener-robux-gratis-en-roblox-2021-enero-nuevo-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/cookie-hack-roblox-players-on-galaxy-note-8_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-hack-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_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
font_00_sfnt_off00002fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE4 21948 bytes
SHA-256: 41a26a799d1851e8b80dd0389ac328cf10dc082a3494e0fa1474157ccade80f8
font_01_sfnt_off00005fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 18440 bytes
SHA-256: 7c23f3e3d318805df684302eb3460a013bc43601185b4b54a2bf1903bd620144

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