Malicious PDF — malware analysis report

Static analysis result for SHA-256 080796948a956ad3…

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 14:47:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ee4d5bbb8c49f0632953f9e455c96534 SHA-1: 550ce0258dd6a16cfc3cdf0bd343200fdc4ca738 SHA-256: 080796948a956ad3e476b9cc6589f225e0b9ab385ff57b97fea626af52a509c7
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized and related to game hacks and free virtual currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a tactic to drive traffic to potentially malicious sites. The ML classifier also flagged the PDF as malicious with high confidence. The document body, though partially corrupted, contains references to 'Free Robux' and URLs that align with this theme, indicating a lure for users interested in such topics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9678

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/free-robux-wheel-game-hack PDF link annotation
    • https://gigbagwinkel.nl/images/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://gigbagwinkel.nl/images/robux-free-robux_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4715 26308 bytes
SHA-256: ab3af0ed278b4f00e31ff7ccdc183cc7e5aa25b0dd014e72fea78fdd8a3b5eb1
font_01_sfnt_off00008460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8460 3216 bytes
SHA-256: 362e38a34f6ae2ac6b7a07d7ef7fffa20cf8e959f0ce51c8872b8177414e967d
font_02_sfnt_off00008f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F86 18452 bytes
SHA-256: 2e7982e98076b23ded81992615fd9156783bf43ce379c6908e3793bc8f10067b

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