Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4a542e3f9d98d1…

MALICIOUS

PDF

32.7 KB Created: 2021-06-29 01:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b23e96126994a673b983837879d63e8 SHA-1: 30bfc2838a95668bd2bcbf7d69166e9449a049c0 SHA-256: 5f4a542e3f9d98d128e1e6fd2002dd38fdf5032e68932960ed12e3308d1e950d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free Robux' or 'game hack' generators. These links likely lead to further malicious content or phishing pages. The document body and embedded URLs strongly suggest a social engineering lure to drive traffic to potentially harmful sites, aligning with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/is-it-true-you-can-get-free-robux-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/new-update-roblox-free-2021-explot_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-in-roblox-jailbreak-on-ipad_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-health-hack-code_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/como-ser-fuerte-en-boxing-simulator-2-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/username-roblox-generator-hack_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-mad-city-hack-money-francais_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-roblox-and-get-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/fashion-frenzy-roblox-free-game_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hacked-tshirt-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/download-free-robux-giver_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/inspect-element-roblox-hack_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-wurst-client_GM479516143.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_off00002ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB3 21864 bytes
SHA-256: 7ec85582725d5d616e14970e3bd03573c500912c4afef498070556b3456669cc
font_01_sfnt_off00005b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0F 18984 bytes
SHA-256: 684f529002b0271408cd6fc6ed4de1be3c26e1071eed1d8c69494865cb100fae

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