Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d5adeb41c72845…

MALICIOUS

PDF

39.3 KB Created: 2021-05-21 08:01:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 21c145fab667e7a1d470b2226d379ff1 SHA-1: 269b0743ed59d3c4844e44bfdf41ea3ebe3e8046 SHA-256: c5d5adeb41c728459f0b37f20d16c0b14985725f3eda564f661602cd83361c34
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 0.8060

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.xyz/app/479516143/minecraft-windows-10-edition-hacks-game-hack PDF link annotation
    • https://hotelyetihome.com/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/no-human-verification-coin-master-hack_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003451.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3451 25068 bytes
SHA-256: d473d0ef94dfa6b9001944c29acaf8b717ec63fc32dd5350ac55df6513f5f2c1
font_01_sfnt_off00006d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D06 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000076a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A5 18696 bytes
SHA-256: 57995c7d2e560419c32609fd78c9e8de7fe6f2ec65952b3fe21507803a80983b

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