Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad1b6417b74bfd9…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 20:49:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7776d772ce09d95ee92b42710ef178a0 SHA-1: a9b164c1e98fb2d0714dfd8f5d575578b2022937 SHA-256: 9ad1b6417b74bfd9ca4529881750c8b1d4b14a84ae00e104ecffd83458853649
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/479516143/free-minecraft-skin-maker-game-hack PDF link annotation
    • http://pustaka.ust.ac.id/repository/hack-robux-gratis-sin-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/como-ser-hacker-en-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-drtrayblox-hair-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-genorator_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/best-free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-earn-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-codes-live-stream_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-use-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-counter-blox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-inspect-code_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-blue-hair-com_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/guess-that-song-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-genorater-no-human-varification-no-survey-no-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-into-your-own-roblox-account_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000316f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316F 22008 bytes
SHA-256: b94065e5ae22b00cc374add30bb806dcd9a410d378b38844dbf5be394999e508
font_01_sfnt_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 18024 bytes
SHA-256: ae8e9e7bdedeb0219c214c271fa7935e3d50c3d8e4c274774e7a90e4006841d3

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