Malicious PDF — malware analysis report

Static analysis result for SHA-256 bacc0a28ad7b9ad0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 22:24:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5454f2abb6d761de2f12269a76f4c3d9 SHA-1: 0e6ca9319c0d5d536038877289ae9c75aadf8429 SHA-256: bacc0a28ad7b9ad0a36a8ad1a4633aa19a06ff8412424d66b3bffad59ab12b8f
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/406889139/coin-master-gifts-game-hack PDF link annotation
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/box-land-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/roblox-free-tix-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/robux-and-tix-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/how-to-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox-for-free-easy_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/roblox-admin-hack-dll_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/free-daw-2-group-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/dll-injector-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/advexplore-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1banyumas.sch.id/__statics/gudangsoal/files/free-hacks-for-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
stream_002_off00003185.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3185 22704 bytes
SHA-256: 59ee92b74f41229eb4f3fa7dfd5d67ebeee1acd9bd28907c5da58cf1e390b794
font_01_sfnt_off00006474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6474 17836 bytes
SHA-256: 2b518dfcd0fe0609680a2236c1af8ab2eef27abcf2a8f037ef6c766c284a6818