Malicious PDF — malware analysis report

Static analysis result for SHA-256 4143c011c5fbd292…

MALICIOUS

PDF

50.1 KB Authoring application: Inkscape
MD5: f096128429cd505a4d3d254d0126a115 SHA-1: a780dee93b0e53a82f0f82105bd9cb5541291b0d SHA-256: 4143c011c5fbd2929f9cf4b8f2d2190038d8790f81b8c5dbd01d40bc8564de65
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a large number of external links, indicating a link farm. The ML classifier also assigned a high probability of maliciousness. The embedded URLs are likely used to redirect users to phishing sites or download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://bedobecome.co/uploads/1/3/0/3/130379332/847321.pdf
    • http://stan.holyrood-drama.com/uploads/1/3/0/5/130589202/juredodivufanafeniv.pdf
    • http://waarmte.nl/uploads/1/3/0/3/130313459/nilimawanuma_wabumiwitik_refenuna_samulitajuvaku.pdf
    • http://koala-d.com/uploads/1/3/0/3/130379114/4775298.pdf
    • https://butikugenaribob.weebly.com/uploads/1/3/0/5/130589168/tawiku-mavobed-vadezebuwajid.pdf
    • http://fribergfysikalske.com/uploads/1/3/0/2/130272577/jerekinokirabeb.pdf
    • http://buve.toowibook.com/uploads/2020/01/29/towuretirenituxelevo.pdf
    • http://wichitajoyorganics.com/uploads/1/3/0/3/130313070/6136957.pdf
    • http://jibaki.malina.sexy/uploads/2020/01/28/8668285.pdf
    • http://talleylakehouse.com/uploads/1/3/0/7/130739678/e25eb.pdf
    • http://ccaabasketball.org/uploads/1/3/0/2/130289767/nokisuruvopelegegabi.pdf
    • http://cityonloc.com/uploads/1/3/0/2/130288534/130288534.html#le+paradis+blanc+de+michel+berger

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000156d.bin
8f902e427e7ddb460999dc369f6add4390b4cd44ec03aedaa7ffd092adac937b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156D 10868 bytes
font_01_sfnt_off00007242.bin
76191b236f3c53f633207af73d10495b89c95425c66b2efc0a3f2e7e2acc656a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7242 16624 bytes
font_02_sfnt_off00008887.bin
5d38a0aee7b48e9b9ae2bbf7ddfe91c991c6d80e6674266f39c03b201e6d7868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 2780 bytes

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