Malicious PDF — malware analysis report

Static analysis result for SHA-256 079673d9003f2723…

MALICIOUS

PDF

36.4 KB Created: 2021-06-23 13:05:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 52b41485dc6707c220eb22e1e14a50cc SHA-1: 4893198a50086d3a9ff935ca89b40dbc92bd1d72 SHA-256: 079673d9003f2723caae161d53c5661937d080b41e579a2315cdf3067a199634
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game currency or hacks, directing users to the URL http://netcdn.co/app/431946152/claim-free-robux-game-hack. The ML classifier strongly indicated maliciousness, and the presence of embedded links suggests an attempt to redirect users to potentially malicious sites for further exploitation. No scripts were extracted, but the document structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.co/app/431946152/claim-free-robux-game-hack PDF link annotation
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-full-spiderman-outfit-free_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-cs-ro-hack_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/wurst-115_GM479516143.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-game_GM406889139.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/can-i-get-robux-for-free_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
font_00_sfnt_off00003628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3628 22760 bytes
SHA-256: 5aedc46b6bb39ba8f905955e85eb758789251a82470153af2556af443971228b
font_01_sfnt_off0000691d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 19168 bytes
SHA-256: dfc8721fbf6b4988d00971a58b16fe325011594e1ee6efadf5a4fdcf2df05fca

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