Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7010c7e0637487…

MALICIOUS

PDF

47.5 KB Created: 2021-05-31 00:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 63fc33388f406759e23ae30e6c5ea594 SHA-1: d8b33ef303f27e894cd152d7ee495561e35ac772 SHA-256: db7010c7e063748729ae43c56b8c65987c521855c017ef7a14e2cb4ef2584927
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links to external websites, many of which are related to game hacks and free currency, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' and the ML classifier further support the malicious nature of this document. The document body, though partially corrupted, contains references to 'Coin Master Free Spins App' and a URL that aligns with the overall theme of luring users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8017

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-spins-app-game-hack
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-hack-mod_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-java-edition-download-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-likes-for-tiktok_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-coins_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-tiktok-followers-no-verification-or-survey_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-gifts_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/claim-free-robux_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-skins-in-minecraft_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-apk-download-v1-144-2-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-you-get-free-robux_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/you-promised-my-son-free-robux_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/get-free-robux-now_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/tiktok-followers-for-free_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/try-minecraft-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-java-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000549b.bin
fe1e0bca0b6a36203a28a6258ecbf4a24fe05ba7a74dc5aa91dc6410c41ab7a7
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x549B 24908 bytes
font_01_sfnt_off00008df2.bin
d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF2 2868 bytes
font_02_sfnt_off000097dd.bin
21af4872a04c62c178ac31651a333ecdcea5bb1ed4ceeeef1956d42e8fc37ea8
pdf-font-stream PDF embedded font (sfnt) at offset 0x97DD 17884 bytes