Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba156388adec0ba…

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 08:24:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7789b67c27a2cfa4d6585e250a2f2523 SHA-1: eab1d5d6ad9f54b3ac2d52e214aea47a0413ae4b SHA-256: 2ba156388adec0ba2878db63ab6103675c7e2b9799e3340d49b0c1119f8a9508
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 0.9865

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.tw/app/431946152/como-ganar-robux-gratis-sin-hacks-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/krnl-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-inappropriate-games_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
stream_004_off00005275.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5275 25064 bytes
SHA-256: 0ad94975770b0b6aa81339c1fe88734d46371a4a19980c3d48dccdecbcebefbf
font_01_sfnt_off00008a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A90 18732 bytes
SHA-256: b606979059198e232bcf90bacd3b023befa72c61ec5e16eed141fdbf39a64af8

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