Malicious PDF — malware analysis report

Static analysis result for SHA-256 c568315b77c27943…

MALICIOUS

PDF

43.1 KB Created: 2021-05-16 07:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4392928baab06c4b94a3ce3f14ba8a63 SHA-1: 13a9b8431a8ef78afe120abf92d464a4ba5d701e SHA-256: c568315b77c27943c29f14324a628c27936a4dcea1ca4b07ee13fc18ff368f9f
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages offering "free spins" and "free coins" for games. This indicates a link farm designed to drive traffic to potentially malicious or phishing websites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • 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/blogspot-coin-master-game-hack PDF link annotation
    • https://bazilikum.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://bazilikum.com/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://bazilikum.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://bazilikum.com/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bazilikum.com/images/coin-master-online_GM406889139.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000497d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497D 26392 bytes
SHA-256: 9df31889ea45c636922da438869cdbfc2f6e046fb6ad2b0310a98622ff00c231
font_01_sfnt_off00008623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8623 18300 bytes
SHA-256: 70576f8f42aad5e9047874363a3070dcdf9b24213dd74598ede00c9fec6f13a3

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