Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb6ec189ad5e134…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 15:52:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 952bb0087ed71550ceee88e41a96a6ce SHA-1: a4aa962cd2f2a4de93bca3fc152472a48f5bad21 SHA-256: 6fb6ec189ad5e1344461c941bed5d1d95532bf07796995c6f0fb85f9dfbe978c
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 0.9980

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.tw/app/479516143/free-minecraft-skins-girl-game-hack PDF link annotation
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/como-consegir-robux-gratis-sin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-robloxian-high-school-free-coins_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coinmaster_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/hack-para-apocalypse-rising-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/hack-game-coin-master_GM406889139.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_off0000324e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324E 22464 bytes
SHA-256: 5de1040f7c6d40fe6ba8ee8654aef70be5b81ac762d54eedfa2354f659252668
font_01_sfnt_off00006427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6427 18100 bytes
SHA-256: b76f3dac7b7b3cf9eeb40e8d40f3dfeb641263e859efa56376b8d43c754683ba

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