Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f8ad20dba31a44…

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 02:30:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e902742d464f32775cce45ceb5418d4 SHA-1: db00412f2c2465e5f77f0cb58f4a20603607f94b SHA-256: 45f8ad20dba31a44e36a89300a38cc2e1458eb9b300e9a2764e46dc99c029c06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, disguised as 'free generator' or 'game hack' lures. The primary URL, http://netcdn.co/app/431946152/free-robux-promo-codes-2021-may-game-hack, is likely used to funnel victims to further malicious content or downloads. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to deceive users.

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-robux-promo-codes-2021-may-game-hack In PDF document text
    • http://www.studiodamato.it/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-see-chegg-answers-free-tiktok_GM835599320.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-hack-roblox-games-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/roblox-free-username-change_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-wins-free-robux_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://www.studiodamato.it/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-wurst_GM479516143.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_off00002e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E91 23012 bytes
SHA-256: 622411a17b8aeaad0bee6b0688d5954fdf75244d6754f68e6fcd9400a596ac88
font_01_sfnt_off00006273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6273 19896 bytes
SHA-256: 8bbe7db972c2f9c7de97f2cc9d58e605cd6f8d07359e88565f1e69492efdb6b4

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