Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d69d08c243c6fa…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 05:41:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 55ab7fdc66cb5125a2286d12f61bc8e3 SHA-1: 9ea4f1112de57382dbfb0a8ae045383394f05a84 SHA-256: 01d69d08c243c6faca1c6f3581c3e127c1e684859edde3e79c4b730e7e601505
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a LOLBin command-execution lure. 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 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/how-to-hack-coins-in-archery-master-3d-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-roblox-passwords-with-cmd_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-tools_GM479516143.pdfIn macro / runtime command snippet
    • http://digilib-pps.unja.ac.id/repository/mr-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-on-roblox-to-get-money-for-blox-burg_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/money-hack-for-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-cheat-engine-online_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-1b-robux-free-no-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/venom-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repositoryIn macro / runtime command snippet
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003130.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3130 23328 bytes
SHA-256: 4af73442186b1ab43fc276a8f97d2b7f5e2193d0e7ee4133db415f95d12558c7
font_01_sfnt_off000065f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F3 18856 bytes
SHA-256: 445c36d795ac989f2c30bdde00fa113f19ffe98633a4d1fc8bfa4507aa191fb8

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