Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabd949565e5e992…

MALICIOUS

PDF

44.1 KB Created: 2021-05-16 00:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9facbb7537212957565af52268f6f525 SHA-1: de873834c852b39f0692b78b8354ff65c1b86a22 SHA-256: fabd949565e5e992a6100f8d1044b30b1f46d9170a79ddc214b0c02230c0c36f
142 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hack generators or free currency sites. The heuristic firings indicate a link farm strategy, with many URLs pointing to domains like grandoazis.by and netcdn.xyz. The document body itself contains text related to 'Coin Master Free Spins' and includes these suspicious URLs, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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-for-today-game-hack PDF link annotation
    • https://grandoazis.by:443/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://grandoazis.by:443/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/robux-xyz_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://grandoazis.by:443/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://grandoazis.by:443/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46BC 24708 bytes
SHA-256: 803fe64e32d2773d1f38a83b3675623869db56fd557c5684db25ea773c03f525
font_01_sfnt_off00007fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBE 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000089a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A9 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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