Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cd28618e720282…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 23:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 57d8aa955bd014c717512756c09a2227 SHA-1: 751e29562e5b2c0b8a7010e350532bb331452957 SHA-256: 35cd28618e7202827e2e8ab824b1c26654e27e0e2151a4ff4500d2f4dc29ac83
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically advertising free game currency or hacks. The primary redirector URL is http://netcdn.co/app/431946152/free-800-robux-gamekit-game-hack. This lure is a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of multiple malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-800-robux-gamekit-game-hack In PDF document text
    • https://www.shin.ge/images/free-clothes-roblox-codes_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/roblox-cheat-xbox-one-argent_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-robux-on-ipad-pro_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-robux-super-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/como-ser-hacker-en-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-group_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-stuff-in-roblox-on-phone_GM431946152.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_off00003096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3096 22508 bytes
SHA-256: 389cefa0645d6129826f0e6bb0a015d62e5346bf83cf8889b8d7aaa77fcd19bc
font_01_sfnt_off00006287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 19752 bytes
SHA-256: 9f1423af7d1f110f0d0a68763a865af0b139910e2fc9cd2e891d0e271ac88dad

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