Malicious PDF — malware analysis report

Static analysis result for SHA-256 25349bf69a006a03…

MALICIOUS

PDF

42.6 KB Created: 2021-05-18 02:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb0334a32b6e37647834f821564bcc3e SHA-1: b5465765fc1dc0e660fb1f6ffeb8e0b313cfc4bc SHA-256: 25349bf69a006a0380b5d1b4acb662a0c7fbd710af798f2189f2d4fd8849790b
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-coin-and-spin-in-coin-master-game-hack PDF link annotation
    • https://ballaratcaravans.com.au/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-time-speed-hack_GM406889139.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_off00004ca7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA7 25028 bytes
SHA-256: aa51b383f69925f686c3c4ca7f06f3b20e550656bf79cfeed57407881a10e97a
font_01_sfnt_off000084ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FF 18060 bytes
SHA-256: e7e0a884e59d6d4457fb90cba238d6b772cb21bcfadc79e96e95c97f919ce424

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