Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffac59785aab26ef…

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 21:15:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fd6d3a9b4979307664df3838b7da30c7 SHA-1: 5aa7961f963af0fb6d4dddec7b4116844bcbf3cc SHA-256: ffac59785aab26ef11b271c6f781e39485b99646de2d57af300b262f797cffb2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://netcdn.xyz/app/431946152/robuxmatch.con-game-hack'. The presence of a visual download button lure and the ML classifier's high confidence score further support the malicious nature of this document. The document body, though heavily obfuscated, contains URLs that likely serve as lures for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robuxmatch.con-game-hack In PDF document text
    • https://ogm-goettingen.de/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/real-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-daily-1-ga_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_off000047e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E4 24740 bytes
SHA-256: 0f122856eb4010ff3c8188e53d8ae43254d1db35225b93149040edc698891c02
font_01_sfnt_off000080ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CA 18672 bytes
SHA-256: b3ad435d94df059fa4f5f4039152be4ff635e0c8c599297d8dd6c4123da1a60e