Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b828c5241c2d4f4…

MALICIOUS

PDF

45.8 KB Created: 2021-05-11 18:13:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 472d11a42cec394e25b67d82e49296de SHA-1: 0d29326706a4bc6ec5371d2340b543231ce7e949 SHA-256: 5b828c5241c2d4f478dc0c778795d09124a75a890fb91b94e869c71787535785
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a generator or hack for popular games. The primary link redirects to malicious infrastructure known for distributing malware. The document body and embedded artifacts suggest a phishing or scam attempt, likely intended to deliver a second-stage payload or lead the user to a credential harvesting site.

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/download-apps-for-robux-game-hack In PDF document text
    • https://www.cosmosdawn.net/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.coIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A39 25192 bytes
SHA-256: 7665ac0575fdd947ab910937fe0b833e4098121fb801a7756b33f3780bede7a3
font_01_sfnt_off00008452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8452 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E13 18996 bytes
SHA-256: ea235c61f7ee6ff97cb8e2e4b8381115f9ce59fc272e8f2939e83a9622de1179

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