Malicious PDF — malware analysis report

Static analysis result for SHA-256 725be2e5faddd502…

MALICIOUS

PDF

45.5 KB Created: 2021-05-19 04:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 04420544846c59275133d2c9e1cfeca7 SHA-1: 0fb26dec57f74bd071b9b54df410a58ea0ccccc3 SHA-256: 725be2e5faddd5028533c775472a04767fcb5e896f4056526e93fcde59b2d4d5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/406889139/free-coins-for-coin-master-game-hack PDF link annotation
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/www-rubux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004981.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4981 27408 bytes
SHA-256: ab79e605ecda12446573f8e25ac4f998eee3712df97d38a4400777ea10a78e0b
font_01_sfnt_off00008750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8750 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off000090f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F1 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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