Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce25513a1df1945…

MALICIOUS

PDF

50.7 KB Created: 2021-06-09 15:14:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a9671e0ce53d5c3ed2a8234d455a72bf SHA-1: 6bae5330b97cf6c9be9efbc27177f87a3ba0aeb4 SHA-256: 7ce25513a1df1945d2fee804e8c3c352cae9d3d515ccec60cb317b7a7c783b84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is https://netcdn.tw/app/431946152/roblox-high-school-2-hacks-game-hack, which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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.tw/app/431946152/roblox-high-school-2-hacks-game-hack In PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/roblox-hack-into-peoples-accounts_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/robux-codes_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5273 29160 bytes
SHA-256: 1f16271e2187b81f7f1eba3f54e83521812589c61b869dbae99e682eaabfe2e9
font_01_sfnt_off000094aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AA 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1BC 18880 bytes
SHA-256: 864adc6770103517ddf9c016905702d0e7c4ad2800e196d913ebd77864423fec

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