Malicious PDF — malware analysis report

Static analysis result for SHA-256 0417acfdbb50a366…

MALICIOUS

PDF

33.9 KB Created: 2021-07-07 22:32:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 60a39fba5fab22a64d4b973faa79f5ac SHA-1: d89a3f1e31b6b4861bc2975f297dab20b4fcb924 SHA-256: 0417acfdbb50a36603b58c4a4b56a76adc33e5fe938d7100d4f5ffb6764db723
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure related to game hacks and free items, specifically mentioning 'Roblox Red Hoodie Free Now'. It includes an external URI pointing to 'http://netcdn.tw/app/431946152/roblox-red-hoodie-free-now-game-hack', which is flagged as a game hack redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially garbled, contains the same lure and URL, suggesting the primary purpose is to trick users into visiting the malicious link.

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/431946152/roblox-red-hoodie-free-now-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-item-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-roblox-with-crosh_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-speed-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-free-clothes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-bypass-roblox-cheat-engine-without-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/nuevo-hack-para-dragon-ball-rage-cesarius-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-followers-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-engine-64-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/noclip-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-account-roblox-2021-obc_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/counter-blox-roblox-offensive-how-to-get-free-skins_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-coins-and-spins-hack_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_off00002fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE8 21600 bytes
SHA-256: 7d7d52f4974efb429a7e64e8bfaf96d335c005e1c2a272b723c909ed101994fc
font_01_sfnt_off00005f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6F 19108 bytes
SHA-256: a3401bc1c31d6aea66e1577d1370a4341c22f91fb283c1f3c3fbefcb96586dd9

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