Malicious PDF — malware analysis report

Static analysis result for SHA-256 0936505a2302a09d…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 15:06:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ba3fe99a0c8b1046b8258b99e1473fc SHA-1: 393eb221da43a18c6f9eb543fc2fed90a2c1ac2f SHA-256: 0936505a2302a09df7d4ef0e4a254405c8be98676a0e8d0e3a97414798a31ad0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/free-roblox-doumnis-game-hack. The document body and embedded URLs suggest a lure for free game hacks or generators, a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious workflow.

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-roblox-doumnis-game-hack In PDF document text
    • https://yowchang.com/image/data/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-game-card-free-codes_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/hack-robux-2021-engine_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-roblox-shirts-girl_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/robux-redeem_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/pokmon-go-free-download-apk_GM1094591345.pdfIn PDF document text
    • https://yowchang.com/image/data/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/como-tener-robux-gratis-sin-hacks-facil-y-rapido-2021_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
    • https://yowchang.com/image/data/files/is-auto-clicker-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off0000307f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307F 22896 bytes
SHA-256: 18b5e14c33a09edb131fdd8ed111923e03bb0813a42b22ecfc72233a06b4b318
font_01_sfnt_off0000638f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638F 19340 bytes
SHA-256: 5452bc479a4b28eb0ae8b5f6c3d331d335be7246fbfb2f15bbd08ad02c057206

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