Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c939b7dfdec06a…

MALICIOUS

PDF

31.7 KB Created: 2021-06-11 05:14:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e012e7313cae0f8a1ce28243687f19d0 SHA-1: aa7cefead34bea842e22aa17deae69c42d3b9cfe SHA-256: a5c939b7dfdec06aa7bf2d8e7f2759685f226b46fcd1760d373e7f79583dc2e0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators for Roblox. The primary lure URL is https://netcdn.tw/app/431946152/roblox-cheat-engine-money-hack-game-hack, which is identified as a malicious redirector. This suggests the document's purpose is to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • 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.tw/app/431946152/roblox-cheat-engine-money-hack-game-hack In PDF document text
    • https://www.shin.ge/images/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/how-do-you-get-robux-free-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-shirts-that-look-pretty-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://www.shin.ge/images/free-promo-code-for-2-million-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/roblox-hacked-twitter_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-gift-cards-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/nbc-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/roblox-ro-ghoul-hack-rc_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/free-robux-without-human-verification-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://www.shin.ge/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/pokemon-go-five-free-raid-passes_GM1094591345.pdfIn PDF document text
    • https://www.shin.ge/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005076.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5076 19661 bytes
SHA-256: 39e271e91b3c8f2aebce7606fd6272632d23f4427eb646177722a9b289d8afb9

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