Malicious PDF — malware analysis report

Static analysis result for SHA-256 2001b5b959d5e1b7…

MALICIOUS

PDF

46.4 KB Created: 2021-06-09 06:27:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37ab4c0c3d6146360624f86e0a13be11 SHA-1: 168bbaef255d7f07fc06605356c6311ba398d7de SHA-256: 2001b5b959d5e1b7594255114760c49d32b66f0cb1c83a57c5b164550c9f1cf8
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 0.9832

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/robux-hack-extension-game-hack PDF link annotation
    • https://pneukalousek.cz/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/juno-hack-filedropper-roblox_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/hack-to-get-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-spins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/zombie-rush-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-how-to-hack-gears-online-rpg-using-cheats_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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
stream_004_off000051ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AC 28736 bytes
SHA-256: c0a505cedbc44904fe8ef1e32c1c25289a3af55c3f52b2e6f144a0ba97be701d
font_01_sfnt_off00009247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9247 18472 bytes
SHA-256: 0b9dae585efa596ca142dbaf0fdbd96bd6aac858474de2a5761187118c4f0af6

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