Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87edc19221c980c…

MALICIOUS

PDF

52.5 KB Created: 2021-06-03 12:52:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7aaacc9cc881dfe6b108abc91efcaa41 SHA-1: 4f90dc868dd44ece5043e7e67392b36bae60248c SHA-256: f87edc19221c980c5c9b7e2a0455a1da7e9f5866d5cb1ddf836fd80f679dd090
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'robux-gratis-hack-sin-verificacion-humana-game-hack', which is flagged as a lure for a game hack. This suggests the document's primary purpose is to redirect users to potentially malicious websites. No scripts were extracted from this sample, limiting the analysis of its execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.online/app/431946152/robux-gratis-hack-sin-verificacion-humana-game-hack PDF link annotation
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/freerubux_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/mcpe-com_GM479516143.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53C1 25412 bytes
SHA-256: a64e8b1272aa97bf32db14066dc48fd32c1d7b75754228df74f218b08186f911
font_01_sfnt_off00008ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE6 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B89 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA89B 18868 bytes
SHA-256: 8ca187e99eae79b142d0b6e8cd02c80ed9f2e0b320cfb022cc9049658c377c04

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