Malicious PDF — malware analysis report

Static analysis result for SHA-256 039e5db8d50272f5…

MALICIOUS

PDF

46.0 KB Created: 2021-05-14 13:33:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ec76f390a2d1c556c60494b07ce1227 SHA-1: 298557ddef86baccfdf4704997b54f639fc2e37e SHA-256: 039e5db8d50272f5748da0867f63a373ad97eeaf52b53f746535f753393fa863
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' to lure victims. These redirectors then point to other malicious PDFs hosted on domains like colditex.com. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/how-do-u-hack-roblox-game-hack In PDF document text
    • https://www.colditex.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/robux-hack_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/instantrobux_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004829.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4829 25924 bytes
SHA-256: 100491d92cfb42e1e003caf83c3963cfe5971cbc6ae2bbae3abf3e616bf42a24
font_01_sfnt_off00008474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8474 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9D 18700 bytes
SHA-256: 24715886d6b8435fb8a33d258b866203ee2974827a311e3ab6dcb36e4a196b9f

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