Malicious PDF — malware analysis report

Static analysis result for SHA-256 13186b5550297647…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 16:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 942cbc4cf14c2a65b6cc2d280a7caac1 SHA-1: 10b54889f04beb467167e6a26d8b56e896c0ff1b SHA-256: 13186b5550297647dff44bc48e3dd871e11c0802aa0562c46f9587a76bccc195
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency, specifically referencing 'Robux', and includes a high-confidence heuristic for a game hack redirect. The embedded URL, http://netcdn.co/app/431946152/do-you-want-free-robux-game-hack, is likely the primary malicious destination. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt designed to redirect users to potentially malicious sites.

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.co/app/431946152/do-you-want-free-robux-game-hack PDF link annotation
    • https://www.croatia-flyfishing.com/files/free-robux-2021-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/pubg-uc-567_GM1330123889.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/robloc-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/tiktok-free-book_GM835599320.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/robux-survey_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/adopt-me-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-hack-someone-on-roblox_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_off00002ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF1 22272 bytes
SHA-256: f7c6198159e940701fa9be8cbdb813525f38ef6514571da2078bf5b888213a14
font_01_sfnt_off000061a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 19348 bytes
SHA-256: b3a5db0d884666837b0067a2afe937122b256ac6fd99d058123c6313ca3c4a42

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