Malicious PDF — malware analysis report

Static analysis result for SHA-256 c211c8cc86d1ad38…

MALICIOUS

PDF

48.6 KB Created: 2021-05-15 05:15:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46c70fb24f2c5251d8ba8293a7d723c7 SHA-1: 5d5b4cfc136e11ed21ad3dd486ad9e054e0a0594 SHA-256: c211c8cc86d1ad387276afdff5dfb4b71e6b34fbe6a22bdf664a0f42165e63ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically promoting game hacks and free currency. The document body and extracted URLs reinforce this lure, suggesting an attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/406889139/coin-master-hack-2021-no-survey-game-hack In PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AC 24608 bytes
SHA-256: 00de63013ec2f43ea39a3ef7ba5213ecebb56d3d2a39c24b88fa42f77997a0a1
font_01_sfnt_off00008281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8281 4076 bytes
SHA-256: 72edb3297646360b86480160291aea528a7dfc74a3cb5ea38ac61dd9ec3dd6c2
font_02_sfnt_off00009046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9046 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A35 18552 bytes
SHA-256: c3f31fea82a5bc0b6f37db2e9e7827f94c525198a16fffe56d68997f31e8d0b7

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