Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c7b79cecf8f4d3…

MALICIOUS

PDF

43.7 KB Created: 2021-05-16 05:37:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: cd5b02805c543b8d8b7c1b241664448d SHA-1: 3649f99e2ed193bcbd2416a23982647286e568b7 SHA-256: 22c7b79cecf8f4d3e04f39351639903ae8d56dd8ff9f7f3dc29a984e043b3cf8
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to redirect users to external websites, masquerading as 'game hacks' or 'free currency' generators. The primary link, 'https://netcdn.xyz/app/406889139/how-to-get-free-spins-on-coin-master-without-waiting-game-hack', is associated with known malicious redirector infrastructure. The document body and heuristics indicate a lure for free spins on Coin Master and free Robux, suggesting a phishing or scam attempt. No scripts were extracted, but the embedded links are the primary vector for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-get-free-spins-on-coin-master-without-waiting-game-hack In PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/_GM479516143.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-no-verification-needed_GM431946152.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
stream_003_off00004b56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B56 25532 bytes
SHA-256: 6e23a6266870e37b637b45a477bb5c0f36aff59e9c6658557bfde8e4509c89ef
font_01_sfnt_off000086dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DC 18844 bytes
SHA-256: 74e90038a15acf9d59ef996dfbbccefa77ce85bd889c53575e7537e702976194

Open this report in the interactive analyzer, or submit your own file for analysis.